From: Subjective and objective evaluation of alertness and sleep quality in depressed patients
 | NIGHT RECORDING | DAY TIME RECORDING | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
 | Sleep latency | Sleep stage 1 (%) | Sleep stage 2 (%) | Sleep st.3+4 (%) | REM sleep (%) | Sleep efficacy | Total sleep time | Sleep stage 0–2 (visual an.) | Alpha amplitude (spectrum an.) | ||
 |  |  |  |  |  |  |  | mean | trend | mean | trend |
Age | Â | Â | Â | -.46 | Â | Â | Â | Â | Â | Â | Â |
Coffee (>2 cups/day) | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Smoking (>10 cig./day) | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Alcohol (>0.5 l wine or >0.1 l distilate/week) | Â | .47 | Â | Â | Â | .46 | Â | Â | Â | Â | Â |
Hypnotics (>3 times/week) | Â | Â | Â | Â | Â | Â | Â | Â | Â | -.68* | Â |
Sedatives (>3 times/week) | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Antidepressants (daily) | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Unexpected event last week | Â | Â | Â | Â | Â | -.54* | Â | Â | Â | Â | Â |
Too active going to bed | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Disturbed by the examination | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Beck: score for depression | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
Beck: score for anxiety | .54* | Â | Â | Â | Â | -.65* | Â | Â | Â | .55* | -.65* |