Table 2.
Basic information included in the study.
| Study | Country | Age (X ±S) | Sample (M) | Patient (disease) |
|---|---|---|---|---|
| Siu et al. (16) | China | 67.3 | 320 (64) | Chronic insomnia |
| Cheung et al. (22) | China | 60.06 | 30 (16) | Lung cancer |
| Yilmaz Gokmen et al. (26) | Turkey | 48.06 | 50 (31) | Obstructive sleep apnea |
| Jones et al. (30) | America | 54 | 101 (7) | Fibromyalgia patients |
| Nguyen et al. (32) | Germany | 68.9 | 96 (48) | Older people |
| Wang et al. (21) | America | 50.1 | 66 (9) | Fibromyalgia patients |
| Irwin et al. (33) | America | 65.55 | 123 (35) | Chronic and primary insomnia |
| Taylor-Piliae et al. (35) | America | 69.3 | 28 (17) | Post-stroke with sleep complaints |
| Taylor-Piliae et al. (36) | America | 69.9 | 145 (77) | Post-stroke with sleep complaints |
| Wang et al. (24) | America | 51.8 | 226 (17) | Fibromyalgia |
| Lü et al. (29) | China | 64.57 | 46 (0) | Knee osteoarthritis (OA) |
| Maddali Bongi et al. (37) | Italy | 52.24 | 44/(N) | Fibromyalgia syndrome |
| Irwin et al. (15) | America | 69.9 | 112 (41) | Healthy older adults |
| Zhu et al. (23) | China | 35.65 | 80 (0) | Dependent on amphetamine-type stimulant |
| McQuade et al. (28) | America | 64.47 | 66 (66) | Prostate cancer |
| Larkey et al. (31) | America | 58.8 | 101 (0) | Breast cancer survivors |
| Frye et al. (20) | America | 69.2 | 84 (30) | Older people |
| Li et al. (25) | America | 75.37 | 118 (22) | Older adults with sleep complaints |
| Irwin et al. (34) | America | 59.8 | 90 (0) | Breast cancer survivors |
| Wang et al. (38) | Japan | 77 | 34 (12) | The elderly with cerebral vascular disorder |
| Hosseini et al. (27) | Iran. | 69.1 | 62 (30) | Insomnia |