Table 1.
Comparisons of clinical features between patients with SRED and those with drug-induced SRED
| Clinical features | Total (n=40) | Primary SRED (n=30) | Drug-induced SRED (n=10) | P-value |
|---|---|---|---|---|
| Female (%) | 62.5 | 66.7 | 50.0 | 0.35 |
| Age at investigation (years) | 35.5±11.2 | 32.2±0.5 | 45.3±15.0 | <0.001 |
| Age at onset (years) | 29.4±12.6 | 26.0±7.4 | 39.6±19.0 | 0.004 |
| Body mass index (kg/m2) | 22.6±3.4 | 22.8±3.5 | 22.1±3.5 | 0.58 |
| Weight gain (kg) | 2.9±4.8 | 3.4±5.0 | 1.1±3.3 | 0.21 |
| ESS score | 10.2±5.8 | 10.3±4.6 | 9.8±8.5 | 0.81 |
| Habitual sleep length (hours) | 5.9±1.3 | 5.9±1.2 | 5.8±1.5 | 0.89 |
| Patients experiencing SRED episodes almost every night (%) | 51.4 | 50.0 | 40.0 | 0.77 |
| Patients experiencing SRED episodes predominantly in the first third of the sleep period (%) | 86.8 | 89.3 | 80.0 | 0.52 |
| Patients experiencing episodes mostly with total amnesia (%) | 43.3 | 31.8 | 75.0 | 0.035 |
| Comorbidity of NES (%) | 47.5 | 63.3 | 0.0 | 0.001 |
| History of sleepwalking during childhood (%) | 37.5 | 46.7 | 10.0 | 0.038 |
Notes: Age at onset, age at the self-reported onset of SRED; ESS score, Epworth Sleepiness Scale score at the time of the investigation; weight gain, self-reported weight gain after SRED onset. Continuous variables are presented as the mean ± SD. Data presented as mean ± SD.
Abbreviations: SRED, sleep-related eating disorder; NES, nocturnal eating syndrome.