Fig. 2From: Prevalence and risk factors for asthma among children aged 0–14 years in Hangzhou: a cross-sectional surveyThe prevalence of asthma children: The prevalence of asthma children was high in age 3 to 7. Prevalence of boys was higher than that of girls in age 4, 6, 8, 9, 10, 11 and 12, marked with an asterisk (all the P values were <0.05)Back to article page