Table 1 Baseline characteristics

Mean age (years) ± SD

54.2 ± 8.8

52.5 ± 9.9

0.193

Mean age of initiation of smoking (years) ± SD

20.9 ± 8.1

21.2 ± 5.6

0.723

Mean age at diagnosis of diabetes (years) ± SD

46.3 ± 9.2

44.5 ± 10.7

0.193

Mean duration of diabetes (years) ± SD

7.9 ± 6.1

8.0 ± 6.6

0.897

Mean number of sticks used per day at baseline ± SD

15.0 ± 14.6

14.1 ± 13.2

0.640

Currently Married (%)

98.2

94.6

0.140

Others (%)

01.8

05.4

< 10 years of schooling (%)

27.7

20.5

0.137

≥ 10 years of schooling (%)

72.3

79.5

Working (%)

61.6

66.1

0.289

Not working (%)

38.4

33.9

Low SES (%)

24.1

17.9

Middle SES (%)

72.3

75.9

Upper Middle SES (%)

03.6

06.3

0.376

Presence of any other chronic diseases (%)

39.3

38.4

0.500