Rate ratio of frequent physical fighting in females aged 13 years
| Variable | Model 1 | P values | Model 2 | P values | Model 3 | P values | Model 4 | P values |
| Constant | 5.35 (3.18 to 8.99) | 5.94 (3.32 to 10.62) | 6.12 (3.43 to 10.91) | 6.10 (2.41 to 15.42) | ||||
| Survey | 0.87 (0.57 to 1.33) | 0.03 | 0.80 (0.51 to 1.28) | 0.36 | 0.73 (0.44 to 1.21) | 0.22 | 0.71 (0.43 to 1.20) | 0.20 |
| Corporal punishment ban | ||||||||
| No ban (reference category) | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| Partial ban (in schools) | 0.56 (0.33 to 0.95) | 0.03 | 0.57 (0.33 to 0.96) | 0.03 | 0.52 (0.30 to 0.90) | 0.02 | 0.51 (0.28 to 0.92) | 0.03 |
| Full ban (schools and home) | 0.42 (0.25 to 0.70) | <0.01 | 0.41 (0.24 to 0.69) | <0.01 | 0.37 (0.21 to 0.65) | <0.01 | 0.35 (0.19 to 0.67) | <0.01 |
| Income per capita (US$, thousands) | 1.00 (0.99 to 1.00) | 0.38 | 1.00 (0.99 to 1.00) | 0.57 | 1.00 (0.99 to 1.00) | 0.35 | ||
| Homicides (per 1 million) | 1.14 (1.01 to 1.28) | 0.03 | 1.13 (1.01 to 1.26) | 0.03 | ||||
| Weapons ban at school | 1.05 (0.79 to 1.40) | 0.73 | ||||||
| Home visits for child maltreatment | 0.83 (0.52 to 1.32) | 0.43 | ||||||
| Parent education programmes | 1.18 (0.57 to 2.46) | 0.65 | ||||||
| Capital punishment ban | 1.07 (0.74 to 1.55) | 0.73 | ||||||
| Goodness of fit: | ||||||||
| AIC | 300.81 | 302.49 | 302.42 | 309.60 | ||||
| BIC | 310.72 | 314.87 | 317.28 | 334.37 | ||||
| Deviance (−2 log likelihood) | −146.41 | −146.24 | −145.21 | −144.80 | ||||
| Likelihood ratio test (vs model 1) | χ2 (df=1)=0.33 | χ2 (df=2)=2.40 | χ2 (df=6)=3.22 | 0.78 |
95% CI shown in parentheses.
AIC, Akaike Information Criterion; BIC, Bayesian Information Criterion.