Demography and lipid metabolism in the ageing Han Chinese population
| Napping (n=428) | Non-napping (n=311) | F or χ2 | P value | |
| Age (years) | 72.79 (7.962) | 71.31 (8.606) | 5.777 | 0.016* |
| Male/female | 180/248 | 131/180 | 0.000 | 0.986 |
| Education (years) | 7.44 (4.821) | 7.62 (4.668) | 0.259 | 0.611 |
| Night sleep (hours) | 6.43 (1.522) | 6.56 (1.396) | 1.482 | 0.224 |
| Smoking (Y/N) | 107/321 | 74/237 | 0.142 | 0.707 |
| Drinking (Y/N) | 71/357 | 49/262 | 0.092 | 0.762 |
| Hypertension (Y/N) | 216/212 | 155/156 | 3.766 | 0.152 |
| Diabetes (Y/N) | 82/346 | 51/260 | 0.930 | 0.335 |
| TG (mmol/L) | 1.80 (1.219) | 1.75 (1.336) | 7.307 | 0.001* |
| Cholesterol (mmol/L) | 4.93 (1.097) | 4.80 (1.120) | 1.817 | 0.163 |
| HDL (mmol/L) | 1.25 (0.342) | 1.198 (0.370) | 2.983 | 0.051 |
| LDL (mmol/L) | 2.95 (1.154) | 3.117 (2.167) | 1.085 | 0.338 |
TG range (0–1.7 mmol/L), cholesterol range (0–5.18 mmol/L), HDL range (male: 1.04–1.66 mmol/L, female: 1.1–1.74 mmol/L), LDL range (0–3.12 mmol/L). Data are shown as mean (SD) unless otherwise stated.
*p<0.05.
HDL, high-density lipoprotein; LDL, low-density lipoprotein; TG, triglyceride fatty acid.