Table 3 Results of the hierarchical logistic regression for factors associated with recent tobacco smoking among boys in private high schools (n = 1227)
step 1 | R2 | step 2 | R2 | ΔR2 | step 3 | R2 | ΔR2 | step 4 | R2 | ΔR2 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.09 | 0.13 | 0.04 | 0.15 | 0.02 | 0.23 | 0.08 | ||||||
Parameter | OR | CI 95% | p | OR | CI 95% | p | OR | CI 95% | p | OR | CI 95% | p |
Age | 1.84 | (1.43-2.36) | 0.00 | 1.82 | (1.39-2.38) | 0.00 | 1.78 | (1.39-2.23) | 0.00 | 1.71 | (1.33-2.21) | 0.00 |
Tuition | ||||||||||||
Over US$ 480 | 3.54 | (1.53-8.14) | 0.00 | 3.70 | (1.61-8.51) | 0.00 | 3.61 | (1.59-8.21) | 0.00 | 2.29 | (0.92-5.71) | 0.07 |
US$ 261-US$ 480 | 2.29 | (0.92-5.71) | 0.07 | 2.43 | (0.96-6.14) | 0.06 | 2.52 | (1.00-6.36) | 0.05 | 2.02 | (0.75-5.49) | 0.15 |
US$ 191-US$ 260 | 1.99 | (0.74-5.34) | 0.16 | 2.08 | (0.77-5.61) | 0.14 | 1.99 | (0.76-5.24) | 0.15 | 1.65 | (0.57-4.75) | 0.33 |
Up to US$ 190 | 1.00 | . | . | 1.00 | . | . | 1.00 | . | . | 1.00 | . | . |
Someone you live with smokes | ||||||||||||
Yes | 1.68 | (1.25-2.26) | 0.00 | 1.68 | (1.25-2.27) | 0.00 | 1.52 | (1.00-2.29) | 0.05 | |||
No | 1.00 | . | . | 1.00 | . | . | 1.00 | . | . | |||
Parental marital status | ||||||||||||
One or both died | 3.56 | (1.53-8.31) | 0.00 | 3.19 | (1.53-6.65) | 0.00 | 3.75 | (1.78-7.85) | 0.00 | |||
Don't live together | 1.20 | (0.76-1.90) | 0.40 | 1.15 | (0.70-1.84) | 0.55 | 1.20 | (0.79-1.82) | 0.38 | |||
Live together | 1.00 | . | . | 1.00 | . | . | 1.00 | . | . | |||
Do you have a religion | ||||||||||||
No | 2,22 | (1.55-3.17) | 0.00 | 1.99 | (1.41-2.81) | 0.00 | ||||||
Yes | 1.00 | . | . | 1.00 | . | . | ||||||
Goes out with friends at night | ||||||||||||
At least once a week | 8.82 | (3.96-19.67) | 0.00 | |||||||||
1 to 3 times a month | 2.46 | (1.02-5.92) | 0.04 | |||||||||
Not even once | 1.00 | . | . |