Table 3.
Correlation coefficients for the SF-36 MCS and PCS and other continuous variables among the 119 study patients
| Variable | MCS | PCS | ||
|---|---|---|---|---|
|
| ||||
| r | p | r | p | |
| Age | -0.017 | NS | -0.442 | <0.001 |
| Albumin | -0.055 | NS | 0.264 | 0.005 |
| PTH | -0.224 | 0.016 | -0.002 | NS |
| Mini-Mental Status Examination | 0.411 | <0.001 | -0.289 | 0.002 |
| Depression | -0.547 | <0.001 | -0.463 | <0.001 |
| Anxiety | -0.486 | <0.001 | -0.359 | <0.001 |
| Global PSQI | -0.086 | NS | -0.228 | 0.014 |
| Subjectivesleepquality | -0.271 | 0.003 | -0.208 | 0.025 |
| Sleeplatency | 0.062 | NS | 0.010 | NS |
| Sleepduration | 0.021 | NS | -0.016 | NS |
| Sleepefficiency | 0.073 | NS | 0.105 | NS |
| Sleepdisturbance | -0.200 | 0.032 | -0.373 | <0.001 |
| Use of sleepmedications | 0.006 | NS | -0.189 | 0.043 |
| Daytimedysfunction | -0.224 | 0.016 | -0.274 | 0.003 |
r, correlationcoefficient; p, p-valueforthe correlation; MCS, SF-36 Mental Component Summary; PCS, SF-36 Physical Component Summary; PTH, Parathyroidhormone; PSQI, Pittsburgh Sleep Quality Index