Table 2.
Zero-order correlations across demographic characteristics and study outcomes
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Age | — | |||||||||||
| 2. Sex | 0.18 | — | ||||||||||
| 3. Race | –0.29* | 0.16 | — | |||||||||
| 4. Education | 0.04 | –0.19 | –0.45** | — | ||||||||
| 5. Marital status | –0.29* | –0.11 | 0.31* | –0.14 | — | |||||||
| 6. Employment | 0.26* | 0.18 | 0.17 | –0.11 | –0.06 | — | ||||||
| 7. Income | 0.36** | –0.09 | –0.34** | 0.28* | –0.41** | –0.23 | — | |||||
| 8. Pain duration | 0.06 | 0.01 | –0.16 | 0.06 | –0.14 | –0.02 | 0.09 | — | ||||
| 9. BMI | –0.12 | 0.02 | 0.29* | –0.21 | 0.13 | –0.02 | –0.26 | –0.07 | — | |||
| 10. PROMIS Sleep | –0.25 | 0.06 | 0.18 | –0.19 | 0.36** | 0.09 | –0.23 | –0.06 | 0.24 | — | ||
| 11. PROMIS Fatigue | –0.27* | –0.13 | 0.03 | –0.04 | 0.36** | 0.04 | –0.28* | –0.21 | 0.26* | 0.59** | — | |
| 12. PROMIS Cognitive | 0.18 | –0.15 | –0.26* | 0.11 | –0.37** | –0.23 | 0.35** | 0.11 | –0.14 | –0.72** | –0.57** | — |
Note: *P < 0.05, **P ≤ 0.01.
Sex coded: 0 = male, 1 = female; race coded: 0 = White, 1 = Black/Other; education coded: 0 = ≤high school degree, 1 = >high school degree; marital status coded: 0 = married/partnered, 1 = not married/partnered; employment coded: 0 = employed, 1 = not employed; income coded: 0 = <$20,000, 1 = ≥$20,000; PROMIS = Patient-Reported Outcomes Measurement Information System.