Table 1.
All (n = 20) | ANr (n = 8) | ANbp (n = 12) | P | |
---|---|---|---|---|
Age at admission, years | 28.6 ± 13.1 | 26.4 ± 17.1 | 30.1 ± 10.2 | 0.549 |
Body mass index, kg/m2 | 13.3 ± 2.2 | 12.6 ± 1.5 | 13.7 ± 2.5 | 0.256 |
Duration of illness, years | 7.2 ± 8.9 | 2.6 ± 2.7 | 10.2 ± 10.4 | 0.031* |
Current menstruation | 3(15%) | 0(0%) | 3(25%) | 0.193 |
Use of sedative drugs | 5 (25%) | 0(0%) | 5(42%) | 0.051 |
Habitual eating behaviors | ||||
Binge-eating alone | 0(0%) | 0(0%) | 0(0%) | |
Vomiting | 9 (45%) | 0(0%) | 9 (75%) | |
Chewing | 3 (15%) | 0(0%) | 3(25%) | |
No binge-eating/vomiting/chewing | 8(40%) | 8(100%) | 0(0%) | |
Drug abuse | ||||
Laxative overuse | 2 (10%) | 0(0%) | 2(17%) | |
Uretic misuse | 1 (5%) | 0(0%) | 1(8%) | |
CES-D, score (0–60) | 28.3 ± 14.6 | 24.0 ± 16.5 | 31.1 ± 13.1 | 0.299 |
PSQI-J | ||||
Global PSQI-J, score (0–21) | 7.05 ± 4.21 | 4.63 ± 2.62 | 8.67 ± 4.38 | 0.031* |
C1 subjective sleep quality, score (0–3) | 1.50 ± 0.83 | 1.25 ± 0.71 | 1.67 ± 0.89 | 0.281 |
C2 sleep latency, score (0–3) | 1.05 ± 1.15 | 0.38 ± 0.74 | 1.50 ± 1.17 | 0.027* |
C3 sleep duration, score (0–3) | 1.20 ± 1.06 | 1.00 ± 0.93 | 1.33 ± 1.16 | 0.504 |
C4 habitual sleep efficiency, score (0–3) | 0.50 ± 1.00 | 0.00 ± 0.00 | 0.83 ± 1.19 | 0.034* |
C5 sleep disturbances, score (0–3) | 1.10 ± 0.64 | 1.00 ± 0.76 | 1.17 ± 0.58 | 0.583 |
C6 use of sleep medication, score (0–3) | 0.60 ± 1.14 | 0.38 ± 1.06 | 0.75 ± 1.22 | 0.487 |
C7 daytime dysfunction, score (0–3) | 1.10 ± 0.85 | 0.63 ± 0.74 | 1.42 ± 0.79 | 0.038* |
Impaired sleep qualitya | 11(55%) | 2(25%) | 9(75%) | 0.040† |
Circadian rhythm disruptionb | 9(45%) | 1(13%) | 8(67%) | 0.025† |
Abnormal sleep durationc | 6(30%) | 0(0%) | 6(50%) | 0.024† |
Figures are in n (%) or means ± SD. *P < 0.05 on t-test. †P < 0.05 on Fisher’s exact test. aGlobal PSQI-J > 5 score. bSleep-onset time before 21 h or after 25 h, or wake-up time before 5 h or after 9 h. cSleep duration ≥10 or ≤5 h. ANr anorexia nervosa restricting type, ANbp anorexia nervosa binge-eating/purging type, CES-D Center for Epidemiologic Studies Depression, PSQI-J Japanese version of the Pittsburgh Sleep Quality Index