Table 3

Factors associated with current smoking in Thailand in bivariate and multivariate logistic regression analysis

Characteristic
Current smoking (%, n)
Unadjusted Odds ratio (95% CIa)
Adjusted OR (95% CI)

Age (years)



11–12
20.0 (2144)
1.00
1.00
13
9.6 (4154)
0.42 [0.32, 0.56]
0.49 [0.36, 0.66]
14
13.6 (5226)
0.63 [0.44, 0.90]
0.56 [0.40, 0.79]
15
12.0 (3806)
0.54 [0.38, 0.77]
0.59 [0.41, 0.86]
16–17
15.8 (1214)
0.75 [0.50, 1.13]
0.75 [0.47, 1.20]
Gender



Female
5.2 (9089)
1.00
1.00
Male
22.0 (9279)
5.17 [4.08, 6.54]
3.64 [2.72, 4.86]
Parental smoking status



None
9.6 (9648)
1.00
1.00
One or both parents smokers
17.3 (8805)
1.98 [1.56, 2.53]
1.62 [1.25, 2.11]
Best friends smokers



None
4.0 (9445)
1.00
1.00
Some
15.7 (7664)
4.44 [3.12, 6.32]
5.07 [3.54, 7.25]
Most or all
53.5 (1627)
27.45 [18.40, 40.96]
26.71 [18.26, 39.06]
Perception that smoking is harmful



No
27.7 (2362)
1.00
1.00
Yes
11.5 (16309)
0.34 [0.25, 0.47]
0.47 [0.33, 0.66]

aCI = Confidence Interval

Rudatsikira et al. International Archives of Medicine 2008 1:8   doi:10.1186/1755-7682-1-8