Estimated recovery trajectory. Estimated mean physical activity over time (a–c), symptom score over time (d–f), and daytime and nocturnal HRs (g–i) for pneumonia patients (left column), PW patients (central column), and asthma patients (right column). The black lines indicate the estimated population mean; shaded areas represent the estimated 95% CIs of the mean. The black dots indicate at the day where physical activity first reaches 100% of normal levels. For HR, darker shaded areas and dotted lines represent nocturnal HR, and lighter shaded area and solid lines represent daytime HR. Estimated HR was adjusted for age. HR, heart rate; PW, preschool wheezing; CI, confidence interval; AE, asthma exacerbation.