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Table 3 Comparison of standardized incidence rates between urban and rural centres and rural towns of different sizes

From: Rural-urban variation in incidence of psychosis in France: a prospective epidemiologic study in two contrasted catchment areas

  Affective psychoses Non-affective psychoses All psychoses
Annual incidence/100000 Incidence rate IRR (CI) Incidence rate IRR (CI) Incidence rate IRR (CI)
Urban area 13.76 2.39a (1.27-4.49) 21.32 1.61a (1.03-2.50) 35.08 1.86a (1.29-2.66)
Rural area (global) 5.76 1 13.23 1 18.90 1
Rural area (biggest towns) 9.50 3.86b (0.75-19.69) 24.50 11.09b (2.23-55.03) 34.01 7.28b (2.36-22,44)
Rural area (medium towns) 5.26 2.14b (0.37-12.30) 9.45 4.28b (0.78-23.37) 14.71 3.15b (0.94-10.52)
Rural area (smallest towns) 2.46 1 2.21 1 4.67 1
  1. aIncidence rate in the rural area (global) as reference.
  2. bIncidence rate in the “smallest towns” as reference.