Figure 1From: Association between bisphenol A exposure and body mass index in Chinese school children: a cross-sectional study Analysis of variance for mean differences of body mass index (BMI) between quartiles 2, 3 or 4 of urine BPA concentrations corrected by specific gravity with quartile 1 in all subjects or stratified by age (8-11 and 12-15 year age groups) or sex after adjustment for age in year and sex. Error bars indicated 95% confidence interval.Back to article page