Table 2.
Subgroup analysis of sleep disorder prevalence among older adults residents in nursing homes in China.
| Subgroup | Included studies | Heterogeneity test | Effect model | Prevalence rate (95% CI) | |
|---|---|---|---|---|---|
| I2 | p | ||||
| Region | |||||
| North China | 3 | 85 | 0.01 | Random | 45% (34%, 55%) |
| Northeast China | 5 | 97 | 0.01 | Random | 44% (31%, 56%) |
| East China | 16 | 98 | 0.01 | Random | 40% (33%, 38%) |
| Central China | 5 | 99 | 0.01 | Random | 57% (44%, 71%) |
| South China | 2 | 99 | 0.01 | Random | 28% (25%, 31%) |
| Southwest China | 3 | 91 | 0.01 | Random | 43% (30%, 57%) |
| Northwest China | 1 | - | - | 42% (35%, 49%) | |
| Taiwan/Hong Kong/Macao | 1 | - | - | 46% (39%, 54%) | |
| Sample size | |||||
| ≤150 | 6 | 81 | 0.01 | Random | 46% (37%, 54%) |
| 150–300 | 11 | 94 | 0.01 | Random | 49% (41%, 57%) |
| 300–500 | 10 | 98 | 0.01 | Random | 40% (30%, 50%) |
| 500–1,000 | 7 | 99 | 0.01 | Random | 39% (27%, 51%) |
| >1,000 | 2 | 100 | 0.01 | Random | 48% (37%, 40%) |
| Duration of residence | |||||
| >1个月 | 4 | 95 | 0.01 | Random | 42% (26%, 58%) |
| ≥3个月 | 12 | 99 | 0.01 | Random | 41% (32%, 50%) |
| ≥6个月 | 7 | 91 | 0.01 | Random | 44% (35%, 52%) |
| ≥12个月 | 2 | 96 | 0.01 | Random | 56% (32%, 79%) |
| Diagnostic criteria | |||||
| PSQI>7 | 23 | 98 | 0.01 | Random | 49% (43%, 54%) |
| PSQI≥8 | 1 | - | - | Random | 41% (31%, 52%) |
| AIS>6 | 3 | 96 | 0.01 | Random | 30% (23%, 38%) |
| PSQI≥11 | 2 | 0 | 0.46 | Fixed | 34% (31%, 37%) |
| PSQI>5 | 3 | 99 | 0.01 | Random | 46% (19%, 72%) |
| Gender | |||||
| Male | 7 | 96 | 0.01 | Random | 37% (27%, 46%) |
| Female | 7 | 95 | 0.01 | Random | 41% (32%, 50%) |
| Depression status | |||||
| Yes | 7 | 92 | 0.01 | Random | 53% (40%, 66%) |
| No | 7 | 83 | 0.01 | Random | 23% (16%, 31%) |
“-” Indicates that the item was not reported in the study.