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Table 3 Poisson regression model of physician characteristics associated with increasing number of activities outside regular practice (N = 162)a

From: Participation in medical activities beyond standard consultations by Swiss general practitioners: a cross-sectional study

Characteristic (N = 162) Univariate IRR (95% CI) p= Multivariate IRR (95% CI) p=
Gender (female) (N = 55) 0.66 (0.51–0.86) 0.002 0.80 (0.60–1.05) 0.11
Age (years)b 1.01 (1.00–1.02) 0.042
Years since obtaining medical diploma (years) 1.01 (1.00–1.02) 0.024
Trained in Switzerland (N = 147) 0.99 (0.69–1.42) 0.95
Hours worked per week on in-office care giving 1.02 (1.01–1.02) < 0.001 1.01 (1.01–1.02) < 0.001
Practice in rural area (N = 48) 1.32 (1.05–1.65) 0.015 1.29 (1.05–1.57) 0.01
Solo practice (N = 48) 0.94 (0.72–1.22) 0.63
Physician member of coordinated network (ie Delta network) (N = 61) 1.20 (0.96–1.49) 0.11
  1. IRR Incident rate ratio. Statistically significant values in multivariate regression are shown in bold
  2. aSix participants excluded because of missing demographic data
  3. bAge not included in multivariate model despite being at p < 0.05 because of significant co-linearity with years since obtaining medical diploma