Table 1

Characteristics of the study population and differences between men and women

TotalMenWomenGender difference
n (%)n (%)n (%)P value
Gender937399 (42.6)538 (57.4)
Marital status
 Married (or not)466 (49.79)204 (51.1)262 (48.7)0.462*
 Single (or not)315 (33.6)139 (34.8)176 (32.7)0.496*
 Divorced (or not)156 (16.6)56 (14.0)100 (18.6)0.064*
Country of birth<0.001*
 Norway793 (84.6)301 (75.4)456 (84.8)
 Western76 (8.1)52 (68.4)24 (31.6)
 Non-Western68 (7.3)32 (47.1)36 (53.9)
Diagnosis0.066*
 L (musculoskeletal)432 (46.1)200 (50.1)232 (43.1)
 P (mental)235 (25.1)94 (23.6)141 (26.2)
 other259 (27.6)98 (24.6)161 (30.1)
Income last year (percentiles)<0.001*
 NOK≥517 644232 (25)142 (35.9)90 (16.9)
 NOK 422 448–517 643232 (25)109 (27.6)123 (23.1)
 NOK 329 402–422 447232 (25)84 (21.3)148 (27.8)
 NOK≤329 401232 (25)60 (15.2)172 (32.3)
Occupational class<0.001*
 Managers/professionals146 (15.6)65 (16.3)81 (15.1)
 Associate professionals197 (21.0)44 (11.0)153 (28.4)
 Routine non-manual304 (32.4)60 (15.0)244 (45.4)
 Manual276 (29.5)221 (55.4)55 (19.2)
(In)sufficient follow-up, assessed by IMEs0.097*
 Yes692 (73.9)248 (71.2)408 (75.8)
 No215 (22.9)102 (25.6)113 (21.0)
Groups defined by gender and diagnoses
 Women/musculoskeletal221 (24.7)0.021
 Men/musculoskeletal191 (21.3)
 Women/mental139 (15.5)
 Men/mental93 (10.4)
 Women/other157 (17.5)
 Men/other95 (10.6)
Mean (SD)Mean (SD)Mean (SD)
Age46.7 (11.04)47.0 (11.51)46.5 (10.69)0.520†
Sick leave 12 months pre baseline
Days31.5 (50.05)28.9 (51.10)33.45 (49.21)0.167†
  • P<0.05 when numbers in bold.

  • 2.

  • †t-Test.

  • IME, independent medical evaluation.