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Table 1 Baseline characteristics of randomised primary care servicesa and physicians, by intervention group

From: Impact of a multifaceted intervention to improve antibiotic prescribing: a pragmatic cluster-randomised controlled trial

  Intervention
(3 clusters, n = 1217 physicians)
Control
(4 clusters, n = 1393 physicians)
Primary care services, n 62 71
Primary care services: habitat, n (%)
 Urban 22 (35.5) 20 (28.2)
 Rural 40 (64.5) 51 (71.8)
Primary care services: habitat, n (%)
 Coast 33 (53.2) 32 (45.1)
 Interior 29 (46.8) 39 (54.9)
Primary care services: residency training, n (%) 23 (37.1) 18 (25.4)
Physicians, by primary care centre, n (%)
 Median (P25 – P75) 19 (10–27.5) 16 (10–26)
 ≤ 10 physicians 17 (27.4) 19 (26.8)
 10–20 physicians 16 (25.8) 22 (31)
 > 20 physicians 29 (46.8) 30 (42.3)
Size of patient list, by group (sum) 1,515,330 1,785,960
Size of patient list, by physician
 Median (IQR) 1309 (1018–1460) 1357 (1070–1501)
 Mean (SD) 1245 (321.2) 1282 (303.3)
Size of list of patients aged > 65 years, by physician
 Median (IQR) 399 (296–490) 441 (321–536)
Months: number at baseline worked by physician
 Median (IQR) 49 (41–51) 48 (38–49)
Antibiotics for systemic use at baseline
 Number (in millions) of prescription-dispensing (sum) 1.33 1.42
 DIDs per year (IQR) 15.9 (15.8–16.0) 14.9 (14.8–15.0)
  1. Abbreviations. IQR Interquartile range, SD Standard deviation, DID Defined daily doses per 1000 inhabitants
  2. a A service can be formed by a health center (median number of health centers per service (IQR): 3 (1–5))