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Table 1 Patient characteristics at baseline for respondents included in the analysis 1 year after hip joint replacement surgery and those excluded after baseline response, mean (SD) unless otherwise stated.

From: Psychometric properties of the Brief Pain Inventory among patients with osteoarthritis undergoing total hip replacement surgery

  Included Excluded p
N 203 47  
Female sex, number (%) 143 (70) 35 (74) 0.58
Age, years 68.7 (9.9) 71.7 (8.4) 0.06
Marital status, number (%)    0.37
   Married 135 (67) 31 (66)  
   Unmarried 11 (5) 0 (0)  
   Separated/divorced 24 (12) 6 (13)  
   Widowed 33 (16) 10 (21)  
Employment, number (%)    0.07
   Retired 123 (61) 35 (76)  
   Disability pension 25 (12) 4 (9)  
   Sick leave 17 (8) 5 (11)  
   Full or part time employed 38 (19) 2 (4)  
Educational level, number (%)    0.19
   Primary school 49 (25) 17 (37)  
   Secondary school 85 (42) 19 (41)  
   University < 4 years 39 (19) 4 (9)  
   University ≥4 years 28 (14) 6 (13)  
Comorbidity, number (%) (N = 168) (N = 42)  
   Cardiovascular 33 (20) 9 (21) 0.47
   Pulmonary 21 (13) 7 (17) 0.31
   Diabetes 5 (3) 3 (7) 0.20
   Cancer 21 (13) 6 (14) 0.46
   Skin diseases 21 (13) 2 (5) 0.12
   Gastrointestinal 26 (16) 5 (12) 0.38
   Psychiatric 18 (11) 3 (7) 0.36
   Other 28 (17) 5 (12) 0.31
Duration of pain prior to surgery, years 6.3 (6.7)1 6.5 (6.1) 2 0.82
Waiting time, days3 68.6 (54.3) 65.6 (58.8)4 0.75
  1. 1n = 181, 2n = 42, 3from baseline to surgery, 4n = 40