Table 1 Demographic characteristics, cigarettes and alcohol consumption among patients with type 1 diabetes affiliated to the Mexican Institute of Social Security

 Male sex

29.2

 Current age, years, mean (Standard Deviation)

32.3 (10.8)

   ≤ 20 years

13.0

  21–30 years

35.4

  31–40 years

30.2

   > 40 years

21.4

  Secondary school or less

12.0

  High school or technical or commercial career

44.3

  University degree or higher

42.7

  Missing data

1.0

  Student

19.8

  Unemployment/housekeeping

23.4

  Unskilled labor

4.2

  Semi-skilled labor

21.9

  Skilled labor

20.8

  Retired or pensioned

7.8

  Missing data

2.1

Alcohol and tobacco consumption

N = 192

  Never smoked

63.5

  Smoked, but quit smoking

24.0

  Active smoking

9.9

  Missing data

2.6

  Yes

11.5

  No

84.3

  Missing data

4.2