Table 3.
Simple regression and correlation analyses to predict PROMIS physical function from TUG, NPRS, BMI, and smoking status.
| Variables | Parameter estimate () 95% CI | Simple correlation (r) 95% CI | P value |
|---|---|---|---|
| TUG—PROMIS (n = 60) | −0.42 (−0.64 to −0.19) | −0.43 (−0.62 to −0.20) | ≤.0005 |
| NPRS—PROMIS (n = 60) | −0.88 (−1.63 to −0.13) | −0.30 (−0.51 to −0.05) | ≤.0217 |
| BMI—PROMIS (n = 58) | −0.41 (−0.75 to −0.07) | −0.31 (−0.52 to −0.05) | ≤.0183 |
| Smoking status—PROMIS (nN = 32, nQ = 23, nC = 8) | N: 40.07 (37.39-42.75); Q vs N: −1.11 (−5.23 to 3.01); C vs N: −4.94 (−10.79 to 0.09) | ≤.2467 |
CI, confidence interval; Smoking Status: N, never smoked; Q, quit smoking; C, current smoker.
Smoking Status was analyzed using an indicator variable parameterization with N = never smoked as the reference category.