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Table 2 Characteristics of the Study Population

From: Calculating incidence rates and prevalence proportions: not as simple as it seems

  Number of cases (n) Percentage (%)
Population characteristics
 Patients 1,223,818  
 Person-years 1,145,726  
Gender
 Male 603,179 49.3
 Female 620,639 50.7
Agea (year)
 0–4 63,969 5.2
 5–17 190,197 15.5
 18–44 432,438 35.3
 45–64 338,904 27.7
 65–74 111,286 9.1
 75–84 62,395 5.1
  ≥ 85 24,629 2.0
General practice characteristics
 Number 312  
 Patients (mean ± SD) 3923 ± 2449  
 Person-years (mean ± SD) 3672 ± 2289  
Mode of practiceb
 Solo 133 42.6
 Duo 79 25.3
 Group 76 24.4
 Unknown 24 7.7
Degree of urbanizationc
 Extremely urbanised 65 20.8
 Strongly urbanised 71 22.8
 Moderately urbanised 57 18.3
 Hardly urbanised 60 19.2
 Not urbanised 48 15.4
 Unknown 11 3.5
  1. aThe age of patients on the last day of the year was used for the total population
  2. bIn a solo practice, one GP is working. In a duo practice two GPs are employed and in a group practice three or more GPs are engaged with the practice
  3. cExtremely urbanized comprised of ≥2500 addresses/ km2; strongly urbanized of ≥1500–2500 addresses/ km2; moderately urbanised of ≥1000–1500 addresses/ km2; hardly urbanised of ≥500–1000 addresses/ km2; not urbanised of < 500 addresses/km2