alexa Screening Employees for Undiagnosed Type 2 Diabetes Mellitus and Evaluation of Risk Scores in Tikur Anbessa Specialized Hospital, Addis Ababa, Ethiopia
ISSN: 2155-6156
Journal of Diabetes & Metabolism

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Screening Employees for Undiagnosed Type 2 Diabetes Mellitus and Evaluation of Risk Scores in Tikur Anbessa Specialized Hospital, Addis Ababa, Ethiopia

Zenebe Negash Wakjira and Alemseged Beyene Berha*

Clinical Pharmacy Unit, Department of Pharmacology and Clinical pharmacy, School of Pharmacy, College of Health Science, Addis Ababa University, Addis Ababa, Ethiopia

*Corresponding Author:
Alemseged Beyene Berha
Clinical Pharmacy Unit, Department of Pharmacology and Clinical pharmacy
School of Pharmacy, College of Health Science, Addis Ababa University
Addis Ababa, Ethiopia
Tel: +251913258012
E-mail: [email protected]

Received date: September 01, 2017; Accepted date: September 26, 2017; Published date: September 30, 2017

Citation: Wakjira ZN, Berha AB (2017) Screening Employees for Undiagnosed Type 2 Diabetes Mellitus and Evaluation of Risk Scores in Tikur Anbessa Specialized Hospital, Addis Ababa, Ethiopia. J Diabetes Metab 8:765. doi:10.4172/2155-6156.1000765

Copyright: © 2017 Wakjira ZN, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Background: Screening enables for identification of those individuals who are sufficiently high risk in the lag phase between the onset of latent hyperglycemia and clinical diagnosis which helps for early intervention. The objective of this study was to assess the employees’ risk of developing undiagnosed type 2 diabetes mellitus and to determine their risk score in Tikur Anbessa Specialized Hospital (TASH).

Methods: A cross-sectional, quantitative method was conducted by using self-administered CANRISK score tool questionnaire. The stratified random sampling technique was used, and data collection took place from April 01 to June 01, 2015 for two months. The data were cleared, entered and analyzed using SPSS version 20.0. Binary Logistic regression was performed with statistical significance determined at P<0.05.

Results: Out of 1450 employees in TASH, 304 employees were recruited in this study. More than half, 167 (54.9%) of the participants were females. Among study participant, 161 (53%) were not involved in regular physical activity as well as 266 (87.2 %) participants did not feed healthy diet daily. Of a total 60 (19.7%) had previous history of elevated blood pressure, 42 (13.8%) of them had hypertension and/or 30 (9.9) % of them had taken drugs for hypertension. Among study participants screened via CANRISK scoring assessment tools 68.4%, 21.7% and 9.9% (7.3% male and 2.6% female) were found to be in the categories of slightly elevated, moderate and high risk category of having pre-diabetes or diabetes, respectively.

Conclusion: It was found that 9.9% of the participant had a high risk score of having pre-diabetes or diabetes, which indicate the high occurrence of diabetes risk factors in those hospital employees who had been expecting a good awareness about the burden of the disease and its risk factors.


Diabetes Mellitus; Undiagnosed type 2 diabetes; Risk factors; CANRISK score; Diabetes risk score


ADA: American Diabetes Association; BMI: Body mass index (kg/m2); CANRISK: Canadian diabetes risk score; ETB: Ethiopian Birr; FINDRISC: Finnish Diabetes Risk Score; IDF: International Diabetes Federation; T2DM: Type 2 Diabetes Mellitus; WC: Waist circumference; WHO: World Health Organization


Type 2 Diabetes mellitus (T2DM) is a metabolic disorder with multiple risk factors that characterized by a chronic increase in blood glucose level due to impairment in carbohydrate, fat, and protein metabolism that end with deterioration in insulin secretion and/or insulin action [1]. It is progressive lifelong conditions which cause ongoing destruction of cell that produces insulin and requires continuous medical management to reduce increase glucose level. The long term complication of hyperglycemia due to failure to control can cause damage, dysfunction and failure of organ such as heart, eye, kidney, nerve, blood vessel, etc. Type 2 diabetes, accounts over 90% of adults with diabetes, and mostly develops after middle age even though currently it goes down to younger age groups [2].

Globally the incidence of DM is increasing very rapidly following the increase in life expectance people concurrently with globalization and urbanization. In 2013 International Diabetes Federation (IDF) estimated that about 382 million people worldwide or 8.3% of adults were with diabetes and out of these about 80% live in low and middle income countries. If these trends continue, this number will increase to 500 million, by 2030 and by 2035 some 592 million people (1 adult in 10) will have diabetes. The largest increases will take place in the regions where developing economies are predominant. Many patients, up to 50% in most investigations, with type 2 diabetes are undiagnosed since they remain asymptomatic and therefore are undetected for many years [3].

The rise in prevalence is predicted to be much greater in developing than in developed countries (69% versus 20%) as well as becoming increasingly common among the younger age groups [3,4]. This increase in type 2 diabetes is inextricably linked to changes towards a Western lifestyle (high diet with reduced physical activity) in developing countries and the rise in prevalence of overweight and obesity. Given the increased risk and the rising health service burden of diabetes and its complications, it seems appropriate to advocate early detection in preparation for some type of educational or therapeutic intervention [5]. In the year 2013 greater than 20 million adults in Africa were estimated to have diabetes, which accounts about 4.8% of adults and this number could be rise to 41 million in the year 2035[6]. According to WHO estimates in Ethiopia about 800,000 cases were recorded in the year 2000, and this number will be expected to rise to 1.8 million by 2030 but in 2013 the report showed that 1.9 million Ethiopian people had diabetes [7].

Type 2 diabetes mellitus can be either from decrease in tissue sensitivity to insulin or impairment in insulin secretion or both because of many risk factors that include genetic and lifestyle related. These contributing factors can be either modifier (or preventable) such as increase in overweight and obesity, sedentary lifestyle, unhealthy diet, alcohol consumption, and tobacco smoking, physical inactivity, urbanization or non-modifier such as age, gender, family history of T2DM, genetic predisposition, history of gestational diabetes, and ethnicity etc. In addition the migration population from rural to urban also can contribute many things for modifiable risk factors [8,9].

Lifestyle modifications can be a very effective way to prevent, delay the development and keep diabetes in control [10]. Even although there is a limited basis of belief that dietary change alone can provide a cure for type 2 diabetes, evidence has clearly shown that lifestyle variables are highly associated with risk of diabetes mellitus. Therefore, by adjusting these factors, it is possible to effectively reduce long term complications of the disease. This can be done with in cooperation with a multi-disciplinary team, especially health care personnel who can provide health related education regarding the risk factors related with diabetes; public health policies make plans to achieve the required outcome and increase awareness among community [11]. The US Cancer Prevention Study also provided evidence that stopping smoking for 10 years in men and five years in women could reduce the risk of diabetes to that of nonsmokers [12].

Most T2DM are initially asymptomatic for a long time and many people remain unaware of their illness until they have developed complication of disease as a result they diagnosed with at least one already developed a complication. Screening is an important approach for identifying subjects at high risk for developing diabetes easily and cost wise in lag phase between the onset of latent/asymptomatic stage and clinical investigation. It helps for prediction of risk score, which encourage early diagnose, identify people require further testing as well as prevention easily than medical measure and to set public health priorities[13]. Data from the United Kingdom Prospective Diabetes Study (UKPDS) came across this suggestion by demonstrating an indirect association between fasting plasma glucose at diagnosis, and adverse clinical outcomes [14].

One approach for detecting individuals at high risk for acquiring diabetes is the use of simple, practical, non-invasive and inexpensive risk score questionnaires. These risk score helps to predict risk without requiring medical or invasive measures, to quickly identify people who may be at a higher risk and who need to have their level of risk further investigated. CANRISK is one the tools that used for screening was adopted from a similar questionnaire that is being used in Finland as part of its national diabetes prevention program (FINDRISC) with the addition of a new question on ethnicity, education and gestational diabetes by the Public Health Agency of Canada (PHAC) that helps to identify risk of pre-diabetes or type 2 diabetes. It is intended for adult’s aged 40 to 74 years, as well as younger individuals at increased risk of type 2 diabetes due to risk factors. After finishing the questionnaire provide an overall CANRISK score of the patient that shows risk of having pre-diabetes or diabetes [15,16]. Therefore, the present study aimed to assess the employees’ risk of developing undiagnosed type 2 diabetes mellitus and to determine their risk score in Tikur Anbessa Specialized Hospital (TASH).


Study area and duration

The study was conducted at Tikur Anbessa Specialized Hospital (TASH), which found in Lideta Subcity Addis Ababa, Ethiopia. TASH is one of the oldest and leading Teaching Hospitals having more than 430 beds with more than 1450 health professionals and administrative staffs. It has a multidisciplinary team of diverse professionals providing a wide range of healthcare services for approximately 300,000 patients each year. The employees form an extremely diverse community, representing almost every cultural and ethnic group found in Ethiopia. There is a wide spectrum of socioeconomic groups. The duration of the study was from April to June, 2015.

Study design

A cross-sectional, quantitative method was conducted on TASH employees by using a self-administered questionnaire and anthropometric measurement.

Sample size determination

Since there was no prior study in the study site an expected prevalence of 50% and desired precision of 0.05 and 95% confidence interval (CI) was used for the calculation. The sample size (n) required for the study was calculated using the formula to estimate a single population proportion.


Where, n = required sample size

Zα/2 = critical value for normal distribution at 95% confidence interval= 1.96 (α = 0.05), P = Proportion = 50%, d = margin of error= 5%


Nevertheless, by considering the resources, participant’s response and the number of population (about 1450 employees) i.e. less than 10,000 the sample size was adjusted to:


Statistical analysis

The data was cleared, entered and statistical analysis was performed using SPSS software (Version 20.0). Stepwise descriptive analysis was carried out using risk score as dependent variable, with age, gender, smoking, physical activity, BMI, WC, ethnicity, educational status, religion, income, fruits and vegetables eating habit, previously measured history of blood pressure, presence of hypertension, gestational diabetes and high birth weight babies, family history of diabetes mellitus, and known hyperglycemia as independent variables. Binary logistic regression was used to assess the risk score toward T2DM with statistical significance determined at P<0.05.

Inclusion and exclusion criteria

All voluntary individual employees who were above 18 years and had been working in TASH were enrolled in the present study. While, individuals with known DM or regularly taking drugs for hyperglycemia management and pregnant women who had been changed the anthropometric and laboratory parameters were excluded from study.

Sampling procedure

We used occupation based stratified random sampling among hospital employees in TASH. First the occupation was classified as professional and administrative employees and then into nine sub groups i.e. physicians (42), pharmacists and druggist (16), nurses (90), medical anesthesiologist and anesthesiology technicians (7), medical laboratory technologist and technicians (12), medical radiologic technologist and radiologists (5), midwiferies (4), physiotherapists (4) and administrative employees (124). Then sample was randomly selected from each professional and administrative employee that was proportional to the size of each strata and the number required was calculated based on the sample size requirement. All personnel in TASH, who were employees and working in TASH who fulfilled the criteria of inclusion had participated in the study.

Data collection

Data collections were performed using CANRISK evaluating tools; a questionaries’ that consist an anthropometric measurement (weight, height, waist circumference) and self-report physical activity, educational status, religion, income, smoking, daily consumption of fruits & vegetables, use of anti-hypertensive medication, history of high blood glucose, and family history of diabetes. The weight was measured by using electronic balance. A height measurement was done using a ‘drop down’ tape measure fixed at about 2 meters on a wall. Body mass index (BMI) is calculated by dividing weight by the square of height as; BMI = Weight (kg)/Height (m)2. Waist circumference (WC) was measured by using non stretchy measuring tape at halfway between the lowest rib and the top of hip bone person stands with abdomen relaxed, arms at the sides, and feet together. Despite anthropometric measurement the other part of the questionnaire was filled by personal self-report of the participants.

Since there is no country specific scale for BMI and WC in our country to measure obesity, we use a WHO obesity cut point as standard during this study (BMI (<18.5 kg/m2: Under normal; 18.5-24.9 kg/m2: Normal; 25-29.9 kg/m2: Overweight; 30-39.9 kg/m2: Obese; ≥ 40 kg/m2: Morbidly obese) and WC (Men <94 cm: normal; ≥ 94 cm: increased and Women <80 cm: normal; ≥ 80 cm: increased).

The CANRISK has 12 types questions that include different variables that measure the outcome and then comparing the results with threshold scores for each of the 3 risk categories; low <21, moderate 21-32, high >32 and all were included in the analysis. The questionnaire was translated from English to Amharic national language to reduce language barriers and verbally explained to the participants who could not understand the medical jargon in the questionnaire.

Ethical consideration

Ethical clearance for the study was obtained from the of School of Pharmacy, College of Health Sciences, Addis Ababa University. An official support letter from the school of pharmacy was written to respective hospital administrative bodies and data collection was undertaken after permission was obtained from the administrative office. Study participants were asked for their consent before being asked for any information. The objective of the study was explained for every participant and was asked to give information only after they give their consent. No persons were obliged to participate in the study without his/her consent. The information provided by each respondent was kept confidential.


Out of the total 1450 employees in TASH, 304 employees were recruited in this study. Of them, 167 (54.9%) were female. The age range of the participants was 20 to 67 and majority (76%) of them was under forty years. From the finding the participants BMI and WC were found between 14.0 kg/m2 to 34.8 kg/m2 and 56 cm to 110 cm, respectively. Among these study participants 53 (17.4%) were overweight, while 8 (2.6%) grouped as obese and 83 (27.3%) were in the range of elevated waist circumference. With regards to their physical activity more than half (53%) were not involved in regular physical activity rather than the daily occasional activity and 87.2% participants did not have a habit of eating healthy diets (fruits and vegetable) regularly.

Of the total, 60 (19.7%) had a personal history of high blood pressure, 42 (13.8%) of them had hypertension and/or 30 (9.9%) of them taken drugs for hypertension. Among the participant 57(18.8%) of them had at least a one-time elevation in blood sugar level and about 21 (13.9%) of the female participants had reported to have gestational risen in blood glucose level. It was revealed that about 95 (31.3%) of participant had a first and 27 (8.9%) a second degree family history of diabetes mellitus. As the study was done in higher institution most 215 (70.7%) participant had an education level of college or university and had income of greater than 5000 ETB. Most participants 179 (58.9%) were the Orthodox religion follower. With respect to the smoking status of the participants, 13 (4.3%) and 16 (5.3%) had reported to be current and previous smokers, respectively. Of the sample participants screened via CANRISK scoring assessment tools 208 (68.4%), 66 (21.7%) and 30 (9.9% (7.3% male and 2.6% female)) were found to be in the categories of slightly elevated, moderate and high risk category of having pre-diabetes or diabetes respectively.

The distribution of demographic data and risk factors versus CANRISK risk score were shown in Table 1 which state that the score increment along with rise in age, physical status such as BMI, WC, regular physical inactivity and lack of habit to eat vegetation as well as the existence of co-morbid condition such as blood pressure, family history of diabetes and high blood glucose level. There was also a decrease in risk score as the participants’ income and educational status increase.

Variable CANRISK risk score range Total
Low risk score N (%) Moderate risk score N (%) High risk score N (%)
Age (years) 20-29 103(33.9%) 16(5.3%) 3(1.0%) 122(40.1%)
30-39 77(25.3%) 25(8.2%) 7(2.3%) 109(35.9%)
>40 28(9.2%) 25(8.2%) 20(6.6%) 73(24.0%)
Gender Male 84(27.6%) 31(10.2%) 22(7.3%) 45.1
Female 124(40.8%) 35(11.5%) 8(2.6%) 167(54.9%)
BMI (kg/m2) <18.5(under normal) 17(5.6%) 2(0.7%) 1(0.3%) 20(6.6%)
18.5-24.9(normal) 166(54.6%) 47(15.5%) 10(3.3%) 223(73.4%)
25-29.9(over weight) 24(7.9%) 13(4.3%) 16(5.3%) 53(17.4%)
>30(obese) 1(0.3%) 4(1.3%) 3(1.0%) 8(2.6%)
Waist circumference (WC) in cm <94(male) 80(26.3%) 26(8.6%) 8(2.6%) 114(37.5%)
>=94(male) 4(1.3%) 5(1.6%) 14(4.6%) 23(7.6%)
<80(female) 87(28.6%) 19(6.2%) 1(0.3%) 107(35.2%)
>=80(female) 37(12.2%) 16(5.3%) 7(2.3%) 60(19.7%)
Ethnicity Oromo 52(17.1%) 18(5.9%) 3(1.0%) 73(24.0%)
Amhara 95(31.2%) 24(7.9%) 18(5.9%) 137(45.1%)
Tigre 25(8.2%) 10(3.3%) 2(0.7%) 37(12.2%)
Other + 36(11.8%) 14(4.6%) 7(2.3%) 57(18.8%)
Educational status Some high school or less 12(3.9%) 9(3.0%) 12(3.9%) 33(10.9%)
High school diploma 22(7.2%) 2(0.7%) 3(1.0%) 27(8.9%)
Some college or university 25(8.2%) 4(1.3%) 0 29(9.5%)
University/college degree 149(49.0%) 51(16.8%) 15(4.9%) 215(70.7%)
Religion Orthodox 126(41.4%) 30(9.9%) 23(7.6%) 179(58.9%)
Muslim 30(9.9%) 11(3.6%) 0 41(13.5%)
Protestant 34(11.2%) 10(3.3%) 3 (1.0%) 47(15.5%)
Catholic 11(3.6%) 8(2.6%) 4(1.3%) 23(7.6%)
Others ++ 7(2.3%) 7(2.3%) 0 14(4.6%)
Income status (ETB per month) <1000 8(2.6%) 1(0.3%) 2(0.7%) 11(3.6%)
1000-1500 9(3.0%) 1(0.3%) 1(0.3%) 11(3.6%)
1500-2000 13(4.3%) 7(2.3%) 7(2.3%) 27(8.9%)
2000-3000 35(11.5%) 6(2.0%) 3(1.0%) 44(14.5%)
3000-5000 57(18.8%) 6(2.0%) 3(1.0%) 66(21.7%)
>5000 86(28.3%) 45(14.8%) 14(4.6%) 145(47.7%)
Physical activity Yes 101(33.2%) 32(10.5%) 10(3.3%) 143(47.0%)
No 107(35.2%) 34(11.2%) 20(6.6%) 161(53.0%)
Vegetable or fruit eat per weeks Every day 31(10.2%) 6(2.0%) 1(0.3%) 38(12.5%)
2-3day 90(29.6%) 33(10.9%) 8(2.6%) 131(43.1%)
Once 83(27.3%) 21(6.9%) 13(4.3%) 117(38.5%)
Not at all 4(1.3%) 6(2.0%) 8(2.6%) 18(5.9%)
History of blood Pressure increase Yes 28(9.2%) 12(3.9%) 20(6.6%) 60(19.7%)
No 158(52.0%) 42(13.8%) 4(1.3%) 204(67.1%)
Don’t known 22(7.2%) 12(3.9%) 6(2.0%) 40(13.2%)
Hypertension (HTN) Yes 20(6.6%) 8(2.6%) 14(4.6%) 42(13.8%)
No 188(61.8%) 58(19.1%) 16(5.3%) 262(86.2%)
HTN medication Yes 13(4.3%) 6(2.0%) 11(3.6%) 30(9.9%)
No 195(64.1%) 60(19.7%) 19(6.2%) 274(90.1%)
History of blood glucose increase Yes 6(2.0%) 31(10.2%) 20(6.6%) 57(18.8%)
No 169(55.6%) 26(8.6%) 4(1.3%) 199(65.5%)
Don’t know 33(10.9%) 9(3.0%) 6(2.0%) 48(15.8%)
Gestational diabetes Yes 3(2.0%) 15(9.9%) 3(2.0%) 21(13.9%)
No 108(71.5%) 18(11.9%) 4(2.6%) 130(86.1%)
Birth baby greater than 4 kg Yes 10(6.6%) 8(5.3%) 2(1.3%) 20(13.2%)
No 99(65.6%) 24(15.9%) 5(3.3%) 128(84.8%)
Don’t know or not applicable 2(1.3%) 1(0.7%) 0 3(2.0%)
Smoking status Non-smoker 196(64.5%) 56(18.4%) 23(7.6%) 275(90.5%)
Current smoker 7(2.3%) 3(1.0%) 3(1.0%) 13 (4.3%)
Previous smoker 5(1.6%) 7(2.3%) 4(1.3%) 16(5.3%)
Family history of DM Mother 20(6.6%) 10(3.3%) 3(1.0%) 33(10.9%)
Father 18(5.9%) 8(2.6%) 7(2.3%) 33(10.9%)
Brother or sister 12(3.9%) 3(1.0%) 3 (1.0%) 18(5.9%)
Children 5(1.6%) 1(0.3%) 0 6(2.0%)
Other+++ 16(5.3%) 10(3.3%) 1(0.3%) 27(8.9%)
No /don’t know 134(44.1%) 32(10.5%) 16(5.3%) 182(59.9%)
Mother-father 3(1.0%) 2(0.7%) 0 5(1.6%)

Table 1: Distribution of demographical and risk factors by CANRISK Score range of participants at Tikur Anbessa Specialized Hospital (TASH), Addis Ababa Ethiopia, April- June, 2015 (N=304).

Of the 16 risk factors investigated age (p=0.000), gender (p=0.002), BMI for overweight and obese (p ≤ 0.001), WC (p=0.000), educational status for high school and less (p=0.000), history of increase blood BP (p=0.000), HTN (p=0.000), history of increase blood sugar(p=0.000), gestational DM (p=0.039) and smoking status (p=0.036) were statistically significant(p<0.05) independent risk factor for undiagnosed type 2 diabetes . The results of logistic regression model are shown in Table 2.

Variable P-value Odds ratios (ORs) 95% confidence intervals (C.I.)
20-29 Ref.    
30-39 0 0.067 0.019, 0 .235
>40 0 0.182 0.072, 0.457
Female (F) Ref.    
Male (M) 0.002 3.802 1.635, 8.843
Normal (BMI 18.5-24.9 kg/m2) Ref.    
Under normal (BMI<18.5 kg/m2) 0.915 1.121 0.136, 9.233
Over weight (BMI 25-29.9 kg/m2) 0 9.211 3.883, 21.849
Obese (BMI=/>30 kg/m2) 0.001 12.78 2.671, 61.156
Waist circumference (WC)
Normal (M: WC<94 cm and F: WC<80 Cm) Ref.    
Increase (M: WC=/>94 cm and F:WC=/>80 Cm) 0 0.039 0.015, 0.103
Educational status
Some University or college degree and above Ref.    
High school or less 0 8.724 3.615, 21.050
Diploma 0.333 1.908 0.515, 7.065
Income status (ETB)
>5000 Ref.    
<1000 0.378 2.079 0.408, 10.595
1000-1500 0.951 0.936 0.111, 7.860
2000-3000 0.023 3.275 1.179, 9.101
1500-2000 0.567 0.685 0.187,2.501
3000-5000 0.217 0.446 0.124, 1.607
Physical activity
Yes Ref.    
No 0.118 0.53 0.239, 1.174
Vegetable or fruit eat
Every day Ref.    
Not every day 0.144 0.221 0.029, 1.671
History of increase blood BP
No Ref.    
Yes 0 11.7 5.102, 26.828
No Ref.    
Yes 0 7.687 3.396, 17.400
History of increase blood sugar
No Ref.    
Yes 0 12.811 5.562, 29.509
Gestational DM
No Ref.    
Yes 0.039 5.25 1.085, 25.395
High Baby Birth
No Ref.    
Yes 0.239 2.8 0.505, 15.521
Smoking status
Non-smoker Ref.    
Current smokers 0.036 0.274 0.082, .918
Previous smoker 0.904 0.9 0.162, 5.007
Family history of DM
No Ref.    
First degree relative 0.21 1.645 0.755, 3.582
Second degree relative 0.383 0.399 0.051, 3.138

Table 2: Logistic regression of bivariate analysis of selected independent Variables in undiagnosed DM participants at Tikur Anbessa Specialized Hospital (TASH), Addis Ababa Ethiopia, April-June, 2015 (N=304).


Screening is one of the most important methods for early identification of an asymptomatic type 2 diabetes mellitus which is one of health concerns in the current world. The result of this simple way of screening using CANRISK risk score assessment tool in study area TASH, tries to identify the most important risk factors which is the indicators of asymptomatic DM easy and cost wise. The risk score increase in line with the occurrence of determinant risk factors that were associated with DM.

In this study 30 (9.9%) of participants had of the high risk score. Nearly three forth 231(76%) of participates were found in the age below 40 years with 10(3.3 %) high risk score. The risk score increased from 1% in the 20-29 years age groups to about 6.6% in the above 40 years. This finding was in agreement with prior studies by Otero et al., 2011 who reported an increase in risk from 0.5% in the 12-34 years age groups to about 10-14% in the 75 years and above [17]. Our study result of T2DM risk factors of odds ratio (ORs) 0.182 finding was lower compared to the previous works that had been reported by Acemoglu et al. who found OR of 3.99, 4.3 and 6.16 for the age rang 40-49 year, 50-59 years and those above 60 years, respectively [18]. The OR of our result is less than one that might be due to age distributions in the younger groups and small number of participants above 40 years. The other study conducted in Kuwait by Al Khalaf et al. 2007 strengthen that age was first significant independent predictor [OR 3.72(1.05-13.2)] [19]. Responsible mechanisms of age-related risk increase include decreased insulin sensitivity and decreased β-cell function [20]. However, significant number of the younger individuals (3.3%) who participated in this study showed high risk score for developing DM.

Our study participant’s CANRISK tool obesity assessment which can obtained from body mass index (BMI) and waist circumferences (WC) variables which is the indicator of the degree of obesity result showed that, 17.4% were recorded to be overweight, 2.6% were obese and about 27.3% had elevated WC. In line with this study, a study conducted by On’Kin et al. 2008 in Congo reported that both total obesity and abdominal obesity were positively associated with all cases of DM (32% in total obesity vs. 18.9% in non-obese; P<0.0001 and 90.4% in abdominal obese vs. 18.1% in non-obese; P<0.0001) [21]. The study conducted in India by Ahmad, 2011 also showed that index of obesity (BMI, >25kg/m2 and increased WC) at least double occurrence risk of DM [22]. In addition study by Azimi-Nezhad et al., 2008 in Iran WC is significant associated with DM, ORs of 1.031(1.012-1.052) with p<0.001 [23]. In this study OR for overweight 9.211 (3.883-21.849), P=0.000 and obese 12.78(2.671-61.156) P=0.001 which is statistically significant and in line with previous study while increased WC 0.39 (0.015-0.103), P<0.001 which is statistically significant but in contrast protective, which may be due to small sample or lack of standard ethnic specific classification of WC.

The finding of the present study has shown that physical activity has no significant association with the development of DM (p-value >0.05). This insignificance may be due to small sample size. Similarly, the study conducted in Bishoftu Town, in Ethiopia also reported an insignificant association between physical activity and undiagnosed DM with OR 1.86 (0.73- 4.77) [20]. A study conducted in Kerala, India by Omolafe et al. 2010 showed that physical activity is a protective factor for the development of DM with OR 0.11(0.05-0.19) p<0.01 [24]. In contrast to our finding, reports from the study conducted in Nyenwe, Nigeria showed that an OR of 2.9 (2.0-4.1) with P-value <0.001 [25]. In addition, a study conducted in Uganda by Mutebi et al. result indicates a significant relation between physical activity and DM (OR 3.723 (1.709-8.111)), P<0.001 [26].

With respect to the blood pressure status about 42(13.8%) of the participants had hypertension which is a strong determinant risk factor for T2DM simultaneously with a history of high BP and the risk of occurrence DM 7.619 fold in this study relative to those of normal BP with p-value 0.000. Similarly, Acemoglu et al., who studied the risk factors of T2DM in Turkey, showed that hypertension enhance the risk of diabetes and recorded a 2.05-fold risk [18]. According to the Health Survey, 51% of diabetics had hypertension and a 2.5-fold risk of diabetes in hypertension, less than that noticed from the present study. According to a recent JNC VII report, hypertension is twice as common among diabetics [27].In addition, Govindarajan et al., 2006 undergone large prospective cohort study that involve 12,550 adults and almost 2.5 times more likely in persons with hypertension than those of normal BP for developing DM [28]. Study of Al Khalaf et al., 2007 in Kuwait showed use of blood pressure medication (OR 2.66, 95% CI: 1.00-7.05) were significant predictors [19].

Although the study result show that about 95 (31.3%) and 27 (8.9%) study participants reported the presence of first and second degree relative family history of DM, respectively, and it was found to be insignificant to predict the risk of developing DM (OR 1.6645(0.755, 3.582) with p-value 0.210)). This finding is inconsistent with the study conducted in Thailand by Aekplakorn et al., 2006 who reported history of diabetes in parent or sibling to have 2.95(2.22-3.92), times increased risk with p-value 0.88 [29]. In contrast, of this, reports from Mutebi et al. in Uganda (OR 2.852 (1.289-6.310), P-value 0.008) [26] also showed significant association between family history of DM and DM risk. The study conducted in India by Ahmad, 2011 also showed that family history increase risk of developing DM 2-3 times [22]. Dong et al. 2011 study indicates family history of DM ORs of 5.41 (3.48-8.40) with p of 0.0017 shown to be a critical indicator for increased risk of diabetes [30]. The probable reason for the statistical insignificance of these risk factors in the present study might be a low sample size or low diagnosed DM especially T2DM because it is asymptomatic for a long period of time and they are also lacking of awareness in most population of our country.

In this study, about 21 (13.9%) of the female participants had gestational DM and 18(11.9%) of these were at moderate to high risk score with ORs 5.25 (1.085, 25.395), p<0.04 i.e. about 5times risk for developing T2DM. This finding is in agreement with the study that had been done by Rhode Island, USA by Verma et al., 2002, that about 27.2% women to be with GDM and 8.2% control women acquire insulin resistant syndrome (IRS) by 11 years after delivery (ORs 5.6(2.6-12.3)) [31]. Dong et al. 2011 study also showed that a history of hyperglycemia (ever been told have hyperglycemia or latent diabetes, including gestational diabetes) significantly (ORs 16.52 (9.00-30.30) with p-value of 0.00 mark risk factors of DM [30]. In contrast to this, study of Zaafir et al. 2010 showed that history of gestational diabetes were insignificant risk factors [13].

The educational status of the present study participant of the sample were more likely of educated part of the Ethiopian context, with 215(70.7%) of whom attended college/university degree education and 15(4.9%) high risk score, which is inconsistent with the report of Otero et al. 2010 showing 68.2% acknowledging college/university degree education had a risk score of 6.8% of developing type 2 DM [17]. Most of the presents study participants were health professional being a study was conducted on hospital employees. So they had good awareness about the risk factors and about the disease state. In this study those with lower education level had about nine times (8.724) opportunity to develop diabetes in comparison with higher education level. About half of the participants 145(47.7%) have a monthly income of greater than 5000 ET birr that might help themto keep affecting economic situation which was an important factor hindering the adoption of healthy lifestyles.

Even though smoking is one the most risk factor for many diseases currently, in this study it was not associated with the risk of developing DM. Conversely, a study conducted in Japanese by Kawakami et al., 1997, had shown that smoking contribute about 3.27 times higher risk for development of T2DM in those who use 16-26 cigarette per day when equated to non-smokers [32] and a study by Hur et al. 2007, in Korea, which was done over 8-years period also indicate that, the risk of having diabetes was 1.6 (95% CI, 1.29-1.97) for those keeping smoke compared with 1.22 (95% CI,0.96-1.55) for those stop [33]. In addition to this study of Zaafir et al., 2010 showed that smoking ≥ 5 years ORs 3.18 (1.64-6.19) were a significant risk factor [13]. The lack of association in the present study could be justified by a small participant of smokers in the study or may lack openness of participants to fulfill the question.

Even though the gender difference in the prevalence for risk factors is relatively low, there is an increase in risk factors such as obesity in male and this was observed in our study that male to be more to have undiagnosed DM (ORs 3.8 (1.635, 8.843) with p-value 0.002). The male noticeability in having of undiagnosed DM were similar to the result exposed by the studies done by On’Kin et al., 2008 in Congo who reported that the OR for DM was 1.44 comparing males with females [21] and Otero et al. 2006 in Canada who reported OR of 1.22 (1.12-1.33) with p-value 0.00) [17]. In contrary to our result, a study conducted in Kuwait by Al Khalaf et al., 2007 show that sex were insignificant independent predictor (ORs) 1.04 (0.45-2.40) with pvalue 0.93[19].


In the present study, it was observed that 9.9% of undiagnosed TASH employees were in high risk for developing T2DM according to the CANRISK risk score tools. There were also observed that increased risk of undiagnosed DM existed in all age groups indicating exposure of the population at mass. The factors related with increased risk of undiagnosed DM were potentially modifiable. Therefore, targeting the prevention to such a modifiable risk factors might reduce the prevalence of risk of undiagnosed DM and screening of DM in such individuals particularly those having high WC and history of hypertension brings more those who lacks awareness for medical attention.

As it was seen from the result the high education level health professionals has less risk (6.98%) for developing DM compared to some high school or less (36.36%). If this study is take place in most other population those having less awareness about the disease and to those have less income for life style modification the risk for DM increase. So this like studies should be performed in those in high risk population to know the prevalence of the disease and its risk factors.

Limitations of the Study

Lack of budget allocation that might be a big challenge to bought a glucose measuring device that is used to determine impaired fasting glucose or impaired glucose tolerance to the prevalence of DM and its risk score. Time constraint and small sample size are also the concern of this study. The CANRISK tool used for this study has not included many variables that can measure the risk for developing diabetes.

Consent for Publication

Not applicable

Availability of Data and Material

The data are available in the public library of Addis Ababa University in the form of soft and hard copy undergraduate’s student directs the study.

Competing Interests

The authors declare that they have no competing interests.


The authors have declared that they received no financial support for their research.

Authors’ Contributions

ZNW: Contributed in the design, data collection, and data entry and also made the data analysis, interpretation of the data and write up of the manuscript. ABB: also contributed to the data analysis, interpretation of the data, made an intellectual review of the paper and read and approved the final manuscript.


We acknowledge all health care professional staff and administrative bodies of TASH for their great cooperation for the success of the study. Authors are also grateful to the Ethiopian Diabetes Association for the support in providing the relevant research material for this study.


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