Among 13-year-old girls, the prevalence of regular smoking reduced by 2.8% but this change just failed to reach statistical significance (95% CI −5.5, 0.011; P = .051).
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Has Childhood Smoking Reduced Following Smoke-Free Public Places Legislation? A Segmented Regression Analysis of Cross-Sectional UK School-Based Surveys.
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0.0510
0.0510