Characteristics of the elderly people in the nursing homes
| Characteristic | Total (n=817) | Sleep quality | P value | |
| Poor (n=550) | Good (n=267) | |||
| Age | 79.1±8.7 | 79.4±8.3 | 78.6±9.5 | 0.228 |
| Gender male | 376 (46.0) | 251 (45.6) | 125 (46.8) | 0.751 |
| Education | ||||
| Primary school and below | 364 (44.6) | 263 (47.8) | 101 (37.8) | 0.004 |
| Junior high school | 203 (24.8) | 138 (25.1) | 65 (24.3) | |
| Senior high school and above | 250 (30.6) | 149 (27.1) | 101 (37.8) | |
| Stable marital status | 302 (37.0) | 186 (33.8) | 116 (43.4) | 0.007 |
| Medical insurance | 766 (93.8) | 517 (94.0) | 249 (93.3) | 0.681 |
| Monthly personal income ≤3000 RMB | 568 (69.5) | 404 (73.5) | 164 (61.4) | <0.001 |
| Duration of admission >3 years | 251 (30.7) | 180 (32.7) | 71 (26.6) | 0.075 |
| History of chronic disease | 620 (75.9) | 454 (82.5) | 166 (62.2) | <0.001 |
| Smoking | 132 (16.2) | 82 (14.9) | 50 (18.7) | 0.164 |
| Alcohol drinking | 96 (11.8) | 60 (10.9) | 36 (13.5) | 0.284 |
| Have a child or more | 746 (91.3) | 496 (90.2) | 250 (93.6) | 0.100 |
| Negative life events | 725 (88.7) | 515 (93.6) | 210 (78.7) | <0.001 |
| High social support | 382 (46.8) | 213 (38.7) | 169 (63.3) | <0.001 |
| Normal ADL status | 268 (32.8) | 152 (27.6) | 116 (43.4) | <0.001 |
| Good subjective sleep quality | 483 (59.1) | 220 (40.0) | 263 (98.5) | <0.001 |
| Increased sleep latency | 433 (53.0) | 421 (76.5) | 12 (4.5) | <0.001 |
| Sleep duration | ||||
| <7 hours | 388 (47.5) | 373 (67.8) | 15 (5.6) | <0.001 |
| 7–8 hours | 293 (35.9) | 140 (25.5) | 153 (57.3) | |
| >8 hours | 136 (16.6) | 37 (6.7) | 99 (37.1) | |
| Reduced sleep efficiency | 499 (61.1) | 457 (83.1) | 42 (15.7) | <0.001 |
| Sleep disturbances | 248 (30.4) | 231 (42.0) | 17 (6.4) | <0.001 |
| Use of sleep medication | 84 (10.3) | 83 (15.1) | 1 (0.4) | <0.001 |
| Daytime dysfunction | 408 (49.9) | 366 (66.5) | 42 (15.7) | <0.001 |
Values are n (%) or mean±SD.
ADL, activities of daily living; RMB, Ren Min Bi.