Table 5.
Within-group comparison of T1 and T2 PSQI global and component scores by subgroup.
| No disability | 1+ disabilities | VI | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| T1 | T2 | Wilcoxon-signed rank test | T1 | T2 | Wilcoxon-signed rank test | T1 | T2 | Wilcoxon-signed rank test | ||
| Global sleep quality | n | 101 | 45 | 30 | ||||||
| M | 6.12 | 7.02 | T = 2,494, p < 0.01 | 8.69 | 9.62 | T = 565, p = 0.079 | 7.80 | 8.50 | T = 232.5, p = 0.293 | |
| SD | 3.62 | 3.84 | 4.93 | 5.13 | 4.66 | 4.75 | ||||
| Mdn | 6.00 | 7.00 | 8.00 | 8.00 | 6.50 | 7.50 | ||||
| IQR | 6 | 6 | 7 | 10 | 7 | 7 | ||||
| Sleep duration | n | 104 | 48 | 32 | ||||||
| M | 0.31 | 0.55 | T = 465, p < 0.01 | 0.85 | 1.02 | T = 119.5, p = 0.106 | 0.81 | 0.88 | T = 27, p = 0.564 | |
| SD | 0.68 | 0.83 | 1.05 | 1.19 | 1.03 | 1.10 | ||||
| Mdn | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | ||||
| IQR | 0 | 1 | 2 | 2 | 2 | 2 | ||||
| Sleep efficiency | n | 104 | 48 | 32 | ||||||
| M | 1.23 | 1.51 | T = 999, p < 0.05 | 1.65 | 1.92 | T = 137, p = 0.225 | 1.44 | 1.81 | T = 64, p = 0.187 | |
| SD | 1.29 | 1.25 | 1.38 | 1.33 | 1.41 | 1.42 | ||||
| Mdn | 1.00 | 1.00 | 2.00 | 3.00 | 1.00 | 3.00 | ||||
| IQR | 3 | 3 | 3 | 3 | 3 | 3 | ||||
| Sleep latency | n | 104 | 47 | 32 | ||||||
| M | 1.19 | 1.07 | T = 625.5, p = 0.195 | 1.38 | 1.45 | T = 176, p = 0.418 | 1.19 | 1.19 | T = 82.5, p = 0.761 | |
| SD | 1.04 | 1.02 | 1.13 | 1.14 | 1.09 | 1.06 | ||||
| Mdn | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| IQR | 2 | 2 | 2 | 2 | 2 | 2 | ||||
| Sleep disturbance | n | 103 | 49 | 33 | ||||||
| M | 1.23 | 1.32 | T = 300, p = 0.117 | 1.69 | 1.76 | T = 99, p = 0.513 | 1.70 | 1.64 | T = 18, p = 0.564 | |
| SD | 0.51 | 0.51 | 0.65 | 0.78 | 0.64 | 0.78 | ||||
| Mdn | 1.00 | 1.00 | 2.00 | 2.00 | 2.00 | 1.00 | ||||
| IQR | 1 | 1 | 1 | 1 | 1 | 1 | ||||
| Sleep quality | n | 105 | 49 | 33 | ||||||
| M | 1.01 | 1.20 | T = 589, p < 0.05 | 1.37 | 1.43 | T = 99, p = 0.513 | 1.21 | 1.30 | T = 63, p = 0.467 | |
| SD | 0.66 | 0.80 | 0.95 | 0.79 | 0.89 | 0.77 | ||||
| Mdn | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| IQR | 0 | 1 | 1 | 1 | 1 | 1 | ||||
| Use of sleep medication | n | 104 | 48 | 32 | ||||||
| M | 0.24 | 0.34 | T = 116.5, p = 0.165 | 1.00 | 0.98 | T = 44, p = 0.915 | 0.97 | 0.88 | T = 14, p = 0.571 | |
| SD | 0.70 | 0.82 | 1.37 | 1.34 | 1.36 | 1.31 | ||||
| Mdn | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||
| IQR | 0 | 0 | 3 | 3 | 3 | 3 | ||||
| Daytime dysfunction | n | 104 | 49 | 33 | ||||||
| M | 0.89 | 1.01 | T = 319.5, p < 0.05 | 1.24 | 1.53 | T = 193, p < 0.05 | 1.12 | 1.42 | T = 85, p < 0.05 | |
| SD | 0.67 | 0.65 | 0.80 | 0.89 | 0.78 | 0.87 | ||||
| Mdn | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | ||||
| IQR | 1 | 0 | 1 | 1 | 1 | 1 | ||||
n, number of participants with valid T1 and T2 scores; M, mean score; SD, standard deviation; Mdn, median score; and IQR, interquartile range. Statistically significant results are shown in bold.