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Table 1 Patients’ characteristics

From: Patients with unexplained physical symptoms have poorer quality of life and higher costs than other patient groups: a cross-sectional study on burden

Socio-demographic characteristic n %
Gender   
Female 131 81%
Male 31 19%
Age in years (mean, SD) 45 11
Nationality   
Dutch 141 87%
Other 21 13%
Marital status   
Married or living with partner 110 68%
Unmarried, divorced or widowed 52 32%
Highest education completed   
Primary school or less 14 9%
Lower vocational or general secondary education 54 33%
Intermediate vocational or higher general secondary education 57 35%
Higher vocational, pre-university, or university education 36 22%
Missing 1 1%
Employment   
Employed 73 45%
Unemployed 89 55%
Number of working hours per week of patients with paid work (mean, SD) 23.9 10.9
Number of working days per week of patients with paid work (mean, SD) 3.9 1.2
Clinical characteristic n %
Classification of UPS by SCID-I   
Undifferentiated somatoform disorder 63 39%
Chronic pain disorder 99 61%
Duration of UPS in years (median, interquartile range) 9 3-16
Number of comorbid DSM-IV Axis I disorders   
No comorbid DSM-IV Axis I disorder 95 59%
One or more comorbid DSM-IV Axis I disorders 67 41%
Number of comorbid DSM-IV Axis II disorders   
No comorbid DSM-IV Axis II disorder 113 70%
One or more comorbid DSM-IV Axis II disorders 47 29%
Missing 2 1%
Referrer   
Primary medical service 82 51%
Secondary medical service 51 31%
Secondary mental service 29 18%