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Table 6 Crude and adjusted measure of expressed needs for skills and knowledge in different clinics.

From: What physicians want to learn about sickness certification: analyses of questionnaire data from 4019 physicians

   Knowledge-index1 Skills-index2
  Worksite n reference group mean diff. from ref. mean p n reference group mean diff. from ref. mean p
Crude Ref: physicians working in any of all other clinics or practices 1988 63.1    1993 54.8   
  Primary health care centre 952   +8.3 <0.001 952   +16.2 <0.001
  Psychiatry 348   +9.4 <0.001 347   +8.7 <0.001
  Occupational health services 122   -3.3 0.053 122   +3.6 0.026
  Orthopaedics 183   +1.9 0.177 184   +1.0 0.447
  Surgery 290   -5.9 <0.001 290   -5.3 <0.001
Model 1 Adjusted for sex (ref: physicians working in any of all other clinics or practices) 1988 65.4    1993 56.1   
  Primary health care centre 952   +8.2 <0.001 952   +16.1 <0.001
  Psychiatry 348   +9.2 <0.001 347   +8.6 <0.001
  Occupational health services 122   -3.2 0.062 122   +3.7 0.023
  Orthopaedics 183   +3.5 0.015 184   +1.8 0.176
  Surgery 290   -4.6 <0.001 290   -4.6 <0.001
Model 2 Adjusted for sex, years in practice (ref: physicians working in any of all other clinics or practices) 1890 72.0    1895 64.1   
  Primary health care centre 917   +7.8 <0.001 917   +15.8 <0.001
  Psychiatry 332   +9.0 <0.001 330   +8.7 <0.001
  Occupational health services 116   -1.2 0.476 116   +6.2 <0.001
  Orthopaedics 170   +3.7 0.009 171   +2.3 0.088
  Surgery 275   -5.3 <0.001 275   -5.2 <0.001
Model 3 Adjusted for sex, years in practice, workplace policy (ref: physicians working in any of all other clinics or practices) 1840 64.4    1843 56.9   
  Primary health care centre 916   +7.6 <0.001 916   +15.5 <0.001
  Psychiatry 317   +9.0 <0.001 315   +8.9 <0.001
  Occupational health services 115   -0.1 0.963 115   +7.3 <0.001
  Orthopaedics 167   +2.8 0.053 168   +1.4 0.305
  Surgery 270   -5.9 <0.001 270   -5.7 <0.001
Model 4 Adjusted for sex, years in practice, workplace policy, support from management (ref: physicians working in any of all other clinics or practices) 1788 64.2    1791 56.4   
  Primary health care centre 906   +7.6 <0.001 906   +15.8 <0.001
  Psychiatry 302   +9.0 <0.001 300   +8.9 <0.001
  Occupational health services 111   -0.5 0.762 111   +7.1 <0.001
  Orthopaedics 163   +2.3 0.111 164   +1.4 0.308
  Surgery 262   -5.7 <0.001 262   -5.6 <0.001
  1. 1Sickness insurance rules, other forms of compensation and options and responsibilities of the physician, the SIO, the employer and the employment office
  2. 2Judging work capacity, assess work demands, assess optimum length and degree of certification, handling conflicts, designing plans of action
  3. Univariate ANOVA and univariate multiple linear regression. Mean index value in percent of maximum.
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