Table 4.

Logistic regression of factors associated with being a nonresponder (n = 104)

Models	β	p value	Odds ratio	95% CI for odds ratio
				Lower	Upper
Model with pain*
Male sex	0.97	0.044	2.6	1.03	6.7
Pain	0.26	0.013	1.3	1.06	1.6
Age	−0.032	0.031	0.97	0.94	1.0
	β0 = 1.1

* Variables included in the regression: sex, pain, PCS questionnaire (Pain Catastrophizing Scale), age.