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Table 3 Factors associated with working out-of-hours compared to not. Multiple regression analysis. N = 1774

From: Out-of-hours workload among Norwegian general practitioners – an observational study

Variables OR 95% CI P-value
Gender
 Male (reference) 1.00    
 Female 0.53 0.423 0.674 < 0.001
Age
 < 35 (reference) 1.00    
 35–44 1.21 0.839 1.747 0.307
 45–54 0.80 0.477 1.357 0.414
 > 54 0.18 0.096 0.340 < 0.001
Specialist in general practice
 Yes (reference) 1.00    
 No 1.07 0.777 1.484 0.665
Experience, number of years as RGPa 0.97 0.931 1.001 0.057
Number of days in clinical practice per weekb 1.00 0.919 1.095 0.945
Number of patients at their list
 < 600 (reference) 1.00    
 601–900 1.60 0.850 3.011 0.145
 901–1200 1.68 0.897 3.156 0.105
 1201–1500 1.54 0.794 3.004 0.200
 1501–1800 0.99 0.438 2.258 0.989
 > 1800 1.65 0.526 5.078 0.395
Number of inhabitants in the municipality
 < 3000 (reference) 1.00    
 3001–5000 1.46 0.609 3.502 0.396
 5001–10,000 0.97 0.449 2.079 0.930
 10,001–25,000 1.25 0.575 2.696 0.578
 25,001–50,000 0.69 0.308 1.550 0.370
 50,001–100,000 0.72 0.312 1.643 0.431
 > 100,000 0.41 0.177 0.932 0.033
Employment position
 Self-employed (reference) 1.00    
 Self-employed with bonus agreement 1.25 0.818 1.898 0.305
 Salaried 1.57 0.735 3.340 0.245
 Salaried and bonus agreement 4.06 1.320 12.461 0.014
Driving distance to nearest hospital
 Less than 30 min (reference) 1.00    
 30 min – 1 h 1.58 1.161 2.151 0.004
 1–2 h 5.01 2.881 8.714 < 0.001
 More than 2 h 3.09 1.317 7.237 0.010
  1. aContinuous variable per year. bContinuous variable per half day, minimum 0.5 and maximum 10