Table 2.
Pairwise correlations
| Grip strength (kg/force) | Gait speed (secs.) | Chair stands (secs.) | Mobility Limitations | PSQI | WASO (mins.) | Latency (mins.) | Duration (hrs.) | Mean | SD (hrs.) | |
|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||
| Gait speed | −.22*** | |||||||||
| Chair stands | −.23*** | .56*** | ||||||||
| Mobility Limitations | −.24*** | .47*** | .31*** | |||||||
| PSQI | −.16*** | .28*** | .16*** | .39*** | ||||||
| WASO | −.04 | .23*** | .16*** | .23*** | .28*** | |||||
| Latency | −.04 | .18*** | .16*** | .22*** | .28*** | .35*** | ||||
| Sleep Duration | −.08* | −.10* | −.07 | −.07 | −.18*** | −.13*** | −.33*** | |||
| Sleep Midpoint | ||||||||||
| Mean | −.09* | .06 | .05 | .08* | .18*** | .09* | .17*** | .02 | ||
| SD | .03 | .01 | .00 | −.01 | .10* | .11** | .15*** | −.21*** | .23*** | |
| Mean | 33.12 | 16.38 | 10.32 | 1.67 | 6.25 | 47.89 | 31.10 | 6.19 | 2:58 AM | .88 |
| Range | 2.67 – 80.33 | 7 – 57.5 | 4 – 30 | 1 – 4 | 1 – 19 | 6.5 – 175.21 | .21 – 217.86 | 2.51 – 10.27 | 11:40 PM – 10:42 AM | .09 – 33.65 |
| SD | 12.47 | 5.00 | 4.57 | .78 | 3.64 | 24.75 | 30.88 | 1.12 | 1.58 hours | 1.43 |
Note. PSQI = Pittsburgh Sleep Quality Index; WASO = wake after sleep onset. SD = standard deviation.
***
p < .001
**
p< .01;
*
p<.05.