Table 4.

Regression data -willingness to have surgery (yes/no)

Predictor	Relative risk ratio	Lower CI	Upper CI	p-value
Region
EURa	1
US	0.04	0.00	1.24	0.066
Japan	0.00	0.00	1.27	0.056
Age	0.99	0.96	1.01	0.268
Gender
Femalea	1
Male	0.68	0.45	1.02	0.065
BMI	1.01	0.97	1.06	0.612
Symptoms
No anxiety/depressiona	1
Anxiety/depression	0.69	0.42	1.13	0.143
Employment
Working (full time & part time)a	1
Retired	1.09	0.58	2.05	0.794
Other	0.80	0.38	1.65	0.54
Disease severity
Milda	1
Moderate	1.64	0.96	2.80	0.07
Severe	4.71	2.42	9.17	< 0.001
Patient satisfaction with medication
Very satisfieda	1
Somewhat satisfied	1.40	0.73	2.71	0.311
Neither satisfied nor dissatisfied	1.75	0.84	3.62	0.134
Very/Somewhat dissatisfied	2.13	0.94	4.82	0.07

^aReference case