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Table 4 Mean age started smoking by tobacco type and mental disorder

From: Cigarette and waterpipe smoking among adult patients with severe and persistent mental illness in Bahrain: a comparison with the National Non-communicable Diseases Risk Factors Survey

Mental disorder

Cigarette smoking

(n = 56)

WP smoking

(n = 25)

All types

(n = 67)

Mean

SD

95 %

CI

Mean

SD

95 %

CI

Mean

SD

95 %

CI

Schizophrenia

16.0

3.8

14.9

17.4

22.3

8.1

15.5

29.0

16.2

3.8

14.9

17.6

MDD

15.0

3.9

12.8

17.2

18.8

9.2

13.3

24.4

15.3

5.1

13.0

17.7

BAD

16.9

3.5

14.5

19.3

27.8

3.2

22.7

32.8

18.5

5.2

15.4

21.7

Total

15.9

3.7

14.9

16.9

21.4

8.5

17.8

24.9

16.4

4.6

15.3

17.5

F

0.804

1.844

2.062

p value

0.453

0.182

0.136