Table 2.

Cox regression analysis of predictors of operative treatment for de Quervain’s tendinopathy

	OR	95% CI	P-value
Age	1.0	0.99-1.0	0.46
Female sex	1.1	0.76-1.5	0.67
White race	0.84	0.61-1.2	0.30
Injection	1.7	1.3-2.3	<0.001
Providers ^
Provider 2	1.1	0.53-2.4	0.75
Provider 3	1.3	0.83-2.1	0.26
Provider 4	*	*	0.96
Provider 5	2.9	2.0-4.3	<0.001
Provider 6	0.68	0.29-1.6	0.37
Provider 7	0.24	0.074-0.76	0.016
Provider 8	*	*	0.93
Provider 9	0.40	0.21-0.73	0.0030
Provider 10	0.77	0.47-1.2	0.28
Provider 11	0.15	0.036-0.61	0.0080

OR=Odds ratio, CI= Confidence Interval

* = OR could not be calculated because the number of surgeries for this provider was zero

^ = Provider 1 is set as the reference