From: Salivary cotinine concentrations in daily smokers in Barcelona, Spain: a cross-sectional study
Estimation of model | β * | 95% CI | R 2 | p-value† |
---|---|---|---|---|
Men (n = 103) | ||||
simple linear model | 5.3 | 3.5, 7.2 | 0.244 | ---- |
quadratic model | 15.7 | 9.0, 22.3 | 0.313 | < 0.05 |
quadratic model adjusted for covariates† | 14.8 | 8.1, 21.5 | 0.353 | < 0.05 |
Women (n = 104) | ||||
simple linear model | 7.7 | 5.9, 9.5 | 0.412 | ---- |
quadratic model | 11.2 | 5.7, 16.7 | 0.421 | 0.188 |
quadratic model adjusted for covariates‡ | 11.3 | 5.8, 16.7 | 0.458 | 0.078 |