Table 1.
Association of school performance or school start with sleep habits and problems.
| Sleep health problems |
Yes N, (%) |
No N, (%) |
Performance P values/odds ratio1 |
School start times P values/odds ratio2 |
|---|---|---|---|---|
| Adequate sleep | ||||
| Weekday | 644 (33.7) | 1266 (66.3) | 0.5160 | 0.0001**/0.67 |
| Weekend | 1547 (80.6) | 366 (19.4) | 0.0832 | 0.9348 |
| Daytime sleepiness | ||||
| Weekday | 1541 (80.3) | 377 (19.7) | 0.1627 | 0.5423 |
| Weekend | 465 (23.9) | 1442 (76.1) | 0.5419 | 0.8493 |
| <7 hours sleep duration | ||||
| Weekday | 1287 (69.2) | 574 (30.8) | 0.5401 | <0.0001**/2.02 |
| Weekend | 254 (14.2) | 1541 (85.8) | 0.0005**/1.95 | 0.3651 |
| Weekday and Weekend | 173(9.2) | 1701(90.8) | 0.0271*/1.66 | 0.5001 |
| Nap after school | 952 (49.5) | 972 (50.5) | 0.1464 | <0.0001**/1.623 |
| Night awakening | 688 (36.2) | 1214 (63.8) | <0.0001**/2.35 | 0.0135*/1.26 |
| Prolonged sleep onset | 711 (36.9) | 1214 (63.1) | 0.0353*/1.39 | 0.4220 |
Notes:
1
Association with school performance (using a cutoff of “average B or better” vs. “C or worse”). Odds ratios were calculated when P values were significant;
2
association with school start times (on or before vs. after 7:30 am).