Table 4 Odds ratios of time effect on diabetes prevalence stratified by age, education and place of residence as estimated by means of logistic regression

2.wave

1.02

0.810

0.87–1.19

Age group

15–39 years (Ref.) ^a

-

-

-

40–59 years

7.46

< 0.001

5.93–9.38

60 + years

17.39

< 0.001

13.65–22.15

Gender

Men (Ref.) ^a

-

-

-

Women

1.25

0.005

1.07–1.47

Educational level

No education (Ref.) ^a

-

-

-

Complete primary

1.38

0.009

1.08–1.77

Complete secondary

1.50

0.001

1.18–1.90

Higher

1.89

< 0.001

1.38–2.59

Residence

Rural (Ref.) ^a

-

-

-

Urban

1.59

< 0.001

1.36–1.88