Table 4.
The prevalence of obesity and overweight among different sleep duration groups in 2010 and 2014 (%).
| Sleep Duration | Normal | Overweight | Obesity | Total | χ2 | p | |
|---|---|---|---|---|---|---|---|
| 2010 | <7 h | 2956 (77.85) | 579 (15.25) | 262 (6.90) | 3797 | 37.37 | 0.000 |
| ≥7–8 h | 2485 (76.34) | 510 (15.67) | 260 (7.99) | 3255 | |||
| ≥8–9 h | 1908 (74.01) | 403 (15.63) | 267 (10.36) | 2578 | |||
| ≥9 h | 1427 (75.18) | 270 (14.23) | 201 (10.59) | 1898 | |||
| Total | 8776 (76.13) | 1762 (15.28) | 990 (8.59) | 11,528 | |||
| 2014 | <7 h | 3238 (72.10) | 718 (15.99) | 535 (11.91) | 4491 | 35.89 | 0.000 |
| ≥7–8 h | 2419 (72.40) | 525 (15.71) | 397 (11.88) | 3341 | |||
| ≥8–9 h | 1646 (68.27) | 387 (16.05) | 378 (15.68) | 2411 | |||
| ≥9 h | 1295 (70.73) | 255 (13.93) | 281 (15.35) | 1831 | |||
| Total | 8598 (71.21) | 1885 (15.61) | 1591 (13.18) | 12,074 |