Independent variables Tobacco dependence
Medium/ Low n(%) High n(%) Fisher’s test Unadjusted Odds Ratio Confidence interval 95%
Sex
Femalea 25(42.4) 34(57.6) 0.182 0.62 0.27-1.43
Male 20(54) 17(46)      
Current age
Mean 35.8 40.4 0.087b 1.03 1.00-1.06
Standard Deviation 14.6 11.5      
Education
Up to Junior Higha 26(51) 25(49) 0.257 1.42 0.63-3.19
Above Junior High 19(42.2) 26(57.8)      
Place of residence
Urbana 39(44.3) 49(55.7) 0.097 0.27 0.05-1.39
Rural 6(75) 2(25)      
Time since diagnosis
Up to 4 yearsa 27(55.1) 22(44.9) 0.074 1.98 0.88-4.46
4 years and over 18(38.3) 29(61.7)      
Schizophrenia
Noa 32(50) 32(50) 0.258 1.46 0.62-3.45
Yes 13(40.6) 19(59.4)      
Therapies received
Only clinicala 17(39.5) 26(60.5) 0.137 0.58 0.26-1.32
Other types 28(52.8) 25(47.2)      
Previous hospitalization
Noa 26(65) 14(35) 0.002 3.62 1.54-8.49
Yes 19(33.9) 37(66.1)      
1st generation antipsychotics
Noa 19(50) 19(50) 0.387 1.23 0.54-2.79
Yes 26(44.8) 32(55.2)      
2nd generation antipsychotics
Noa 30(53.6) 26(46.4) 0.089 1.92 0.84-4.40
Yes 15(37.5) 25(62.5)      
Somatic comorbidities
Noa 25(56.8) 19(43.2) 0.053 2.15 0.94-4.90
Yes 19(38) 31(62)      
Age when smoking initiated
Up to 15 yearsa 29(49.2) 30(50.8) 0.362 1.27 0.56-2.90
16 years and over 16(43.2) 21(56.8)      
Attempted to quit smoking
Yesa 37(45.7) 44(54.3) 0.395 0.74 0.24-2.22
No 8(53.3) 7(46.7)      
aReference category
bt test for equality of means
Table 2: Degree of tobacco dependence in relation to each one of the independent variables.