Table 1.

Gender-wise association of predictor variables with current cigarette smoking

Description of categories and its subcategories of adolescents	Male/female/both	Status of current smoking among adolescents
		Male		Female		Both
		OR 95% CI (LL-UL)	Significant	OR 95% CI (LL-UL)	Significant	OR 95% CI (LL-UL)	Significant
Age (Reference: 11-12 years)
11-12	350/309/659	1.00	0.03	1.00	0.59	1.00	0.03
13	1251/1545/2796	1.47 (0.78-2.76)	0.23	1.41 (0.59-3.35)	0.43	1.38 (0.83-2.29)	0.22
14	1495/1812/3307	1.24 (0.66-2.32)	0.50	1.43 (0.61-3.37)	0.41	1.26 (0.76-2.09)	0.37
15	1423/1317/2740	1.97 (1.07-3.64)	0.03	1.42 (0.59-3.40)	0.43	1.76 (1.07-2.90)	0.03
16-17	291/158/449	1.21 (0.54-2.74)	0.64	0.32 (0.04-2.70)	0.30	1.06 (0.51-2.19)	0.87
Education (Reference: Eighth)
Eighth	1582/1659/3241	1.00	0.01	1.00	0.78	1.00	0.05
Ninth	1456/1885/3341	1.28 (0.90-1.81)	0.17	0.92 (0.61-1.37)	0.67	1.08 (0.83-1.41)	0.57
Tenth	1772/1597/3369	1.65 (1.20-2.27)	0.00	0.86 (0.56-1.32)	0.49	1.34 (1.04-1.73)	0.02
Gender (Reference: Male)
Male	4810					1.00
Female	5141					0.51 (0.41-0.63)	0.00
Parental smoking (Reference: None)
None	3408/4031/7439	1.00	0.00	1.00	0.00	1.00	0.00
Both	245/234/479	2.70 (1.68-4.34)	0.00	4.70 (2.67-8.28)	0.00	3.44 (2.39-4.94)	0.00
Father only	1054/805/1859	2.31 (1.73-3.09)	0.00	3.97 (2.70-5.84)	0.00	2.97 (2.36-3.75)	0.00
Mother only	103/71/174	5.80 (3.38-9.96)	0.00	10.49 (5.14-21.43)	0.00	7.65 (4.97-11.76)	0.00
People smoke a cigarette in home (Reference: No)
No	3706/4197/7903
Yes	1104/944/2048	11.19 (8.32-15.05)	0.00	13.02 (8.86-19.15)	0.00	12.20 (9.65-15.43)	0.00
People smoke cigarette in your presence (Reference: No)
No	2974/3456/6430
Yes	1836/1685/3521	11.87 (8.15-17.31)	0.00	8.30 (5.45-12.64)	0.00	10.50 (7.95-13.89)	0.00
Felt boys who smoke had more friends (Reference: More friends)
More friends	1237/1237/2474	1.00	0.00	1.00	0.00	1.00	0.00
Less friends	2584/2717/5301	0.47 (0.34-0.63)	0.00	0.51 (0.35-0.76)	0.00	0.48 (0.38-0.61)	0.00
No difference from nonsmoker	989/1187/2176	0.92 (0.66-1.28)	0.62	0.75 (0.48-1.17)	0.20	0.83 (0.63-1.08)	0.16
Felt girls who smoke had more friends (Reference: More friends)
More friends	708/613/1321	1.00	0.00	1.00	0.00	1.00	0.00
Less friends	2970/3387/6357	0.52 (0.35-0.76)	0.00	0.25 (0.16-0.39)	0.00	0.37 (0.28-0.50)	0.00
No difference from nonsmoker	1132/1141/2273	1.85 (1.27-2.69)	0.00	0.89 (0.57-1.39)	0.61	1.36 (1.03-1.81)	0.03
Accepting cigarette offered by one of the best friends smoking (Reference: definitely/probably not)
Definitely/probably not	4456/4927/9383	1.00		1.00		1.00
Definitely/probably yes	354/214/568	53.49 (39.22-72.95)	0.00	78.74 (52.79-117.44)	0.00	64.79 (50.72-82.77)	0.00
Perception on attractiveness of boys who smoke (Reference: More attractive)
More attractive	1128/1118/2246	1.00	0.00	1.00	0.00	1.00	0.00
Less attractive	2631/2711/5342	0.24 (0.17-0.33)	0.00	0.18 (0.11-0.30)	0.00	0.22 (0.16-0.29)	0.00
No difference from nonsmoker	1051/1312/2363	0.97 (0.72-1.31)	0.85	1.12 (0.76-1.64)	0.56	0.99 (0.78-1.25)	0.93
Perception on attractiveness of girls who smoke (Reference: More attractive)
More attractive	905/720/1625	1.00	0.00	1.00	0.00	1.00	0.00
Less attractive	2783/3027/5810	0.27 (0.20-0.36)	0.00	0.19 (0.12-0.28)	0.00	0.23 (0.18-0.29)	0.00
No difference from nonsmoker	1122/1394/2516	0.57 (0.41-0.79)	0.00	0.35 (0.23-0.54)	0.00	0.45 (0.35-0.58)	0.00
Perception smoking makes one loss or gain weight (Reference: Gain weight)
Gain weight	416/354/770	1.00	0.00	1.00	0.00	1.00	0.00
Loss weight	3451/3848/7299	2.12 (0.98-4.58)	0.05	0.88 (0.40-1.93)	0.75	1.43 (0.83-2.47)	0.20
No difference	943/939/1882	8.03 (3.71-17.39)	0.00	3.44 (1.56-7.60)	0.00	5.54 (3.19-9.61)	0.00
Perception cigarettes smoking harmful (reference: Definitely/probably not)
Definitely/probably not	832/754/1586	1.00		1.00		1.00
Definitely/probably yes	3978/4387/8365	0.97 (0.69-1.36)	0.84	0.57 (0.38-0.85)	0.01	0.77 (0.59-1.00)	0.05

OR: Odds ratio, CI: Confidence interval, LL: Lower limit, UL: Upper limit