.Pittsburgh Sleep Quality Index
The PSQI was administered on days 2 and 28 (Table 2). A PSQI score of more than 5 indicates sleep disturbance. The total PSQI mean score for participants (n = 146) at day 2 admission from the community was 10.91 (SD = 4.14), with 90.4% of participants reporting having sleep disturbances. By day 28, the total PSQI mean score for participants (n = 95) was 6.39 (SD = 3.64), with 50.5% of participants reporting having sleep disturbances. A McNemar test was performed to compare the prevalence of sleep disturbances at the 2 time points. Eighty-two patients had valid data for both time points. Of those with data at both time points, the prevalence of sleep disturbances was significantly higher at day 2 (91.5%) than at day 28 (53.7%; P < .001). Sleep latency significantly decreased (t = 4.41; P < .001) and sleep time significantly increased (t = −5.13; P < .001) at day 28 compared with day 2.