Prospective survival analysis
Table 3 presents the analysis of the five obesity-related factors for incident asthma at ages 12 and 17 years in the survival model. Three of the five factors were associated with increased incident asthma risk. Among the three risk factors, obesity presented the highest risk of incident asthma (HR: 1.28, 95% CI: 1.05 to 1.56), followed by a 1.18-, and 1.10-fold higher risk of incident asthma per IQR increase for SDB (HR: 1.18, 95% CI: 1.08 to 1.29), and sleep quality (HR: 1.10, 95% CI: 1.03 to 1.17), respectively. In the subgroup analysis, SDB was associated with an increase in atopic asthma (HR: 1.50, 95% CI: 1.22 to 1.84).