Variable Total Population (N=861) Male Students (n=272) Female Students (n=589) p Value† Effect Size††
FPG, mg/dl, mean  ±  SD 88.3  ±  10.25 88.95  ±  10.7 88  ±  10.03 0.202 0.092
OGTT 2-hour glucose level, mg/dl, mean  ±  SD 88.37  ±  17.76 88.19  ±  14.74 88.46  ±  19 0.401 -0.016
HbA1c (%),% of Hb (mmol/L value), mean  ±  SD 5.6  ±  0.41(37.7) 5.58  ±  0.42 (39.9) 5.61  ±  0.4 (37.8) 0.821 -0.073
Assessment based on FPG       0.067 0.079
  Normal, n (%) 770 (89.4) 234 (86.0) 536 (91.0)    
  IFG, n (%) 87 (10.1) 37 (13.6) 50 (8.5)    
  Diabetes, n (%) 4 (0.5) 1 (0.4) 3 (0.5)    
Assessment based on OGTT 2-hour glucose level 0.659 0.031
  Normal, n (%) 851 (98.8) 270 (99.3) 581 (98.6)    
  IGR, n (%) 9 (1.0) 2 (0.7) 7 (1.2)    
  Diabetes, n (%) 1 (0.1) 0 (0.0) 1 (0.2)    
Assessment based on HbA1c 0.013 0.101
  Normal, n (%) 711 (82.6) 218 (80.1) 493 (83.7)    
  IGR, n (%) 139 (16.1) 54 (19.9) 85 (14.4)    
  Diabetes, n (%) 11 (1.3) 0 (0.0) 11 (1.9)    
Note. FPG, fasting plasma glucose; OGTT, oral glucose tolerance test; IGR, impaired glucose regulation. †Two-sided independent t-test (continuous variables) or chi-square test (categorical variable) to determine the association between sex and each variable. Bold font indicates statistical significance at the 0.05 level. †† Effect size indicates strength of relationship between variables.
Table 3: Summary of FPG, OGTT 2-hour post-load glucose level, and HbA1c results, and IGR and diabetes assessments based on those results.