Sleep measure | Friday (n=169) | Saturday (n=168) | p Value |
---|---|---|---|
TST (minutes)* | 486 (5) | 469 (6) | 0.01 |
WASO (minutes)† | 73 (52) | 72 (41) | 0.50 |
Sleep efficiency (%)† | 85.9 (7.7) | 86.1 (8.1) | 0.84 |
SOL (minutes)† | 3 (4) | 2 (4) | 0.19 |
Number of awakenings* | 25 (1) | 25 (1) | 0.86 |
Length of awakenings (minutes)† | 3 (1) | 3 (1) | 0.39 |
Sleep onset time | S: 8.5% L: 61.5% E: 30.0% |
E=more than 30 min earlier than Friday; L=more than 30 min later than Friday; S=within 30 min of Friday.
*Data are presented as mean (SE), paired Student's t-test.
†Data are presented as median (IQR), Wilcoxon Signed-rank test.
SOL, sleep onset latency; TST, total sleep time; WASO, wake after sleep onset.