Table 4.

Model summary data from separate linear regression analyses to predict PROMIS physical function from the set of independent variables.

Variable, N = 57	Multiple regression coefficient ($\hat{\beta }$), 95% CI	Semipartial R2	P value
TUG	−0.45 (−0.73 to −0.17)	0.135	≤.0023
NPRS	−0.25 (−1.08 to −0.59)	0.005	≤.5572
BMI	−0.19 (−0.53 to 0.14)	0.018	≤.2482
Smoking status	N: 39.60 (34.83-43.38); Q vs N: −2.61 (−6.39 to 1.17); C vs N: −4.58 (−9.89 to 0.73)	0.050	≤.1587

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.