Table 6.
The correlation coefficients (Spearman's rho) for the SDI outcomes against actigraphy outcomes and the NPI-NH sleep item.
| SDI outcome |
TST night (actigraphy) |
WASO (actigraphy) |
24 h fragmentation index (actigraphy) |
NPI-NH sleep item |
|---|---|---|---|---|
| SDI average total | −0.431* | 0.389* | 0.216 | 0.746* |
| SDI summed product | −0.432* | 0.402* | 0.216 | 0.751* |
| SDI summed frequency | −0.436* | 0.395* | 0.213 | 0.754* |
| Mean frequency | −0.436* | 0.395* | 0.213 | 0.754* |
| Mean severity | −0.403* | 0.369* | 0.195 | 0.749* |
| Mean distress | −0.408* | 0.372* | 0.160 | 0.755* |
NPI-NH, Neuropsychiatric Inventory—nursing home version; SDI, Sleep Disorder Inventory; TST, total sleep time; WASO, wake after sleep onset.
*
Correlations were significant at the 0.01 level (2-tailed).