3.2 | Sleep parameters among adolescents with and without asthma
Table 3 shows the differences of sleep parameters between the asthma groups and non-asthma groups. Adolescents with asthma were significantly different from those without asthma in terms of every sleep variable. Most of all, sleep satisfaction was significantly poorer (sleep satisfaction not enough: 44.6% vs. 42.6%) in the asthma group than it was in the non-asthma group. Adolescents with asthma slept less than did those without asthma (average sleep duration 6.59 ± 0.94 vs 7.29 ± 1.45 hr, proportion of less than 5 hr of sleep duration was 8.6% vs 7.6%, respectively, p < 0.001). Asthmatics were also more likely to be night owls on both weekdays (22.6% vs 21.2%) and weekends (41.8% vs 41.2%), and to be early larks on weekdays (42.4% vs 42.0%), while less likely to be on weekends (4.0% vs 6.3%). The weekday sleep duration (5.58 ± 1.81 vs 6.92 ± 1.43 hr) was shorter, while the weekend sleep duration (9.11 ± 2.75 vs 8.21 ± 2.91 hr) was significantly longer in adolescents with asthma than it was in those without. In addition, the WCUS duration was significantly longer in the adolescents with asthma than it was in those without asthma (3.13 ± 0.01 vs 2.29 ± 0.01 hr). The proportion of longer WCUS among adolescents with asthma was 48.9%, and that among adolescents without asthma was 43.3%.