Table 4 Relationships of sleep variables with clinical characteristics of patients with AN

Sleep onset time

0.474

– 0.170

0.152

0.332

0.029

0.478*

0.875

0.038

Sleep offset time

0.108

– 0.370

0.051

0.442

0.048

0.448*

0.150

0.334

Total sleep time

0.103

– 0.375

0.622

– 0.117

0.667

– 0.102

0.039

0.466*

Sleep efficiency

0.867

– 0.040

0.729

– 0.083

0.140

– 0.342

0.370

– 0.212

Wake after sleep onset (WASO)

0.661

0.105

0.486

– 0.165

0.071

0.766

0.539

0.146

Mid-sleep awakenings lasting ≥ 5 min (frequency)

0.693

-0.094

0.661

0.105

0.324

0.232

0.076

0.406

Mid-sleep awakenings lasting ≥ 5 min (duration, minutes)

0.293

-0.254

0.036

0.484*

0.413

0.199

0.246

0.280