Table 2. Adjusted and Unadjusted Treatment Effects of Predictive Tool Use on Willingness for Surgery and Treatment Preference .

Outcome measure	OR (95% CI)	P value
Willingness for surgery
Unadjusted
Immediate	0.62 (0.35-1.11)	.10
6 wk	0.53 (0.29-0.96)	.04
12 wk	0.46 (0.25-0.83)	.01
6 mo	0.68 (0.38-1.21)	.19
Adjusted for baseline difference in willingness for surgery
Immediate	0.70 (0.27-1.81)	.46
6 wk	0.58 (0.26-1.29)	.18
12 wk	0.52 (0.25-1.10)	.09
6 mo	0.85 (0.42-1.71)	.64
Treatment preference at 6 mo
Unadjusted
Uncertain	0.34 (0.14-0.77)	.01
Prefers surgery^a	0.43 (0.22-0.84)	.01
Prefers nonsurgical treatment^a	2.31 (1.19-4.49)	.01
Adjusted for baseline difference in willingness for surgery
Uncertain	0.36 (0.16-0.76)	.009
Prefers surgery^a	0.46 (0.20-1.03)	.06
Prefers nonsurgical treatment^a	2.16 (0.98-4.92)	.06

Abbreviation: OR, odds ratio.

^{^a}

If not uncertain about treatment.