Home polysomnographic findings and parental ratings of child’s sleep quality impairment and daytime sleepiness in children with asthma (n = 15)
| Baseline | Four weeks | Median change | p value | |
|---|---|---|---|---|
| Polysomnography | ||||
| Actual sleep time (minutes) | 527.5 | 507.5 | −17.3 | NS |
| (485–574.5) | (451–590.5) | (-56.6–36.8) | ||
| Sleep efficiency (%) | 93.8 | 96.8 | 3.2 | NS |
| (87.8– 97.0) | (96.8–98.1) | (−0.3–6) | ||
| Sleep latency (minutes) | 16.5 | 17.5 | 5 | NS |
| (11.8–19.6) | (12.3–27.1) | (−6.1–15.6) | ||
| Number of awakenings < 2 minutes | 13 | 2 | −10.5 | < 0.05 |
| (9–17) | (0–4) | (−13.8 to −5) | ||
| Number of awakenings > 2 minutes | 5 | 0 | −4.5 | < 0.05 |
| (2–8) | (0–2) | (−7 to −2.3) | ||
| NREM stage 1 (%) | 7.3 | 6.3 | 2.2 | NS |
| (5–8.8) | (3.8–9.3) | (-4.2–4.4) | ||
| NREM stage 2 (%) | 25.4 | 20.1 | -4.1 | NS |
| (20.8–36) | (11.7–32.2) | (−9.2–7) | ||
| NREM stage 3 and 4 combined | 34 | 43.3 | 7.4 | NS |
| (slow wave sleep) (%) | (29.4– 38) | (31.4–55.7) | (−1.9–11) | |
| REM latency (minutes) | 100.5 | 107.3 | −0.8 | NS |
| (86.8–142.4) | (80.4–158.8) | (−10.5–13.1) | ||
| REM sleep (%) | 20.2 | 20.6 | −0.2 | NS |
| (16–27) | (17–26.2) | (−3.5–4.9) | ||
| Parental ratings | ||||
| Impairment of sleep quality (%) | 25 | 25 | −6 | NS |
| (8–46) | (10.25–39.8) | (−17–8) | ||
| Daytime sleepiness (%) | 19 | 26.5 | 0 | NS |
| (10–31) (2) | (10.6–33) | (−5–4.9) | ||
Results expressed as median (interquartile range) (any missing values).
NREM, non-rapid eye movement