Demography and cognitive scores of the subjects in the ageing Han Chinese population
| Napping (n=1534) | Non-napping (n=680) | F or χ2 | P value | |
| Age (years) | 71.09 (7.62) | 70.40 (8.22) | 3.63 | 0.057 |
| Male/female | 638/896 | 274/406 | 0.33 | 0.567 |
| Education (years) | 7.37 (4.72) | 6.95 (4.71) | 3.81 | 0.051 |
| Night sleep (hours) | 6.54 (1.49) | 6.61 (1.51) | 1.13 | 0.289 |
| Smoking (Y/N) | 426/1108 | 185/495 | 0.08 | 0.784 |
| Drinking (Y/N) | 331/1203 | 138/542 | 0.47 | 0.495 |
| Hypertension (Y/N) | 742/792 | 313/357 | 5.31 | 0.070 |
| Diabetes (Y/N) | 266/1268 | 106/574 | 1.04 | 0.309 |
| Dementia (Y/N) | 80/1169 | 47/498 | 2.84 | 0.092 |
| MMSE | ||||
| Orientation | 9.28 (1.51) | 9.01 (1.83) | 12.83 | <0.001* |
| Language function | 7.27 (1.92) | 7.06 (2.01) | 5.26 | 0.022* |
| MMSE total | 25.30 (5.09) | 24.56 (5.85) | 8.85 | 0.003* |
| MoCA | ||||
| Orientation | 5.55 (1.02) | 5.41 (1.21) | 7.63 | 0.006* |
| NTB | ||||
| Digit span | 13.24 (6.62) | 12.48 (5.62) | 6.80 | 0.009* |
| Language fluency | 24.35 (9.94) | 23.23 (11.59) | 5.40 | 0.020* |
Data is shown as mean(SD) unless otherwise stated.
*p<0.05.
MMSE, Mini-Mental State Examination; MoCA, Montreal Cognitive Assessment; NTB, Neuropsychological Test Battery.