Table 1. Baseline characteristics of the study population according to sleep duration.
| Short N = 506 | Recommended N = 1439 | ||
|---|---|---|---|
| Age | |||
| Mean (SD) | 4.33 (0.26) | 4.38 (0.26) | 4.31 (0.26) |
| Sex | |||
| Boys | 983 (50.5) | 259 (51.2) | 724 (50.3) |
| Girls | 962 (49.5) | 247 (48.8) | 715 (49.7) |
| Socioeconomic status | |||
| Low | 643 (33.0) | 144 (28.5) | 499 (34.7) |
| Middle | 653 (33.6) | 144 (28.5) | 509 (35.4) |
| High | 649 (33.4) | 218 (43.0) | 431 (29.9) |
| Household location | |||
| Rural | 616 (31.7) | 114 (22.5) | 502 (34.9) |
| Urban | 1329 (68.3) | 392 (77.5) | 937 (65.1) |
| Maternal education | |||
| < 7 years | 862 (44.5) | 187 (37.0) | 675 (47.2) |
| 7+ years | 1074 (55.5) | 318 (63.0) | 756 (52.8) |
| Paternal education | |||
| < 7 years | 641 (33.0) | 137 (27.1) | 504 (35.0) |
| 7+ years | 1304 (67.0) | 369 (72.9) | 935 (65.0) |
| Number of meals the previous day | |||
| Up to 5 times/day | 1456 (75.1) | 383 (75.8) | 1073 (74.8) |
| >5 times/day | 483 (24.9) | 122 (24.2) | 361 (25.2) |
| Last week, physical activity (days) | |||
| < 7 days | 1261 (66.8) | 325 (66.7) | 936 (66.9) |
| 7 days | 626 (33.2) | 162 (33.3) | 464 (33.1) |
| Maternal BMI | |||
| Normal | 827 (44.7) | 214 (44.4) | 613 (44.8) |
| Overweight/Obese | 1023 (55.3) | 268 (55.6) | 755 (55.2) |
Some variables may not add the total due to missing values.