Table 1.
Participant and Sleep Characteristics (N = 120)
| Characteristic | Value |
|---|---|
| Race n (%) | |
| African American | 79 (65.8) |
| Non-Hispanic | 113 (94.2) |
| Female, n (%) | 66 (55.0) |
| Age, mean ± SD | 65.5 ± 11.1 |
| Length of stay, days, median (IQR) | 5 (3–7) |
| Charlson Comorbidity Index, median (IQR) (range 0–37)a | 2 (0–3) |
| Discharge destination, n (%) | |
| Home | 105 (87.5) |
| Rehabilitation center | 10 (8.3) |
| Transferred | 4 (3.3) |
| Deceased | 1 (0.8) |
| Limitation before hospitalization, n (%)b | 74 (61.7) |
| Physical therapy, n (%) | 59 (49.2) |
| Sleep medication, n (%) | 7 (5.8) |
| Developed delirium, n (%) | 3 (2.5) |
| Sleep characteristic | |
| Sleep extremely disrupted by pain, n (%)c | 25.7 (21.4) |
| Clinical insomnia, n (%)d | 25 (29.4) |
| Sleep duration before admission, minutes, mean ± SDe | 390 ± 2.1 |
| Sleep duration before activity interval, minutes, mean ± SDf | 289 ± 157 |
| Sleep efficiency before activity interval, %, mean ± SDf | 65.2 ± 26.9 |
a
N = 116.
b
N = 119.
c
Based on self-report from daily survey while enrolled in study.
d
Based on Insomnia Severity Index ≥15, survey given upon admission. N = 85 given survey after original study began.
e
Based on self-reported sleep from month before admission.
f
Obtained using actigraphy, and efficiency analyzed using self-reported bed time and awake time during hospitalization as rest interval.
SD = standard deviation; IQR = interquartile range.