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Table 1 Individual characteristics and antibiotic prescriptions

From: Antibiotic use in the care home setting: a retrospective cohort study analysing routine data

  Whole HHRa cohort Age <75 years Age ≥75, non-care home Age ≥75, in care home Age ≥75, in care home, no urinary catheter Age ≥75, in care home, with urinary catheter
(N = 1,244,313) (N = 1,142,292) (N = 94,539) (N = 7481) (N = 7153) (N = 328)
Individual characteristics
Female 624,482 (50 %) 564,538 (49 %) 54,457 (58 %) 5486 (73 %) 5335 (75 %) 151 (46 %)
Mean age (SD) 40 (23) 36 (20) 82 (5.4) 87 (6.6) 87 (6.6) 86 (5.8)
Urinary catheter 3736 (0.30 %) 2020 (0.18 %) 1388 (1.5 %) 328 (4.4 %) 0 (0 %) 328 (100 %)
Comorbidity (QOF)b       
 None 696,661 (56 %) 678,184 (59 %) 17,211 (18 %) 1265 (17 %) 1244 (17 %) 21 (6.4 %)
 1 257,926 (21 %) 239,526 (21 %) 17,505 (19 %) 895 (12 %) 855 (12 %) 40 (12 %)
 2 141,233 (11 %) 120,788 (11 %) 19,113 (20 %) 1332 (18 %) 1263 (18 %) 69 (21 %)
 3 or more 148,493 (12 %) 103,794 (9.0 %) 40,710 (43 %) 3989 (53 %) 3791 (53 %) 198 (60 %)
Individuals prescribed antibiotics (AB) at least once during 2011     
 Any ABc 329,291 (26 %) 287,067 (25 %) 38,550 (41 %) 3674 (49 %) 3405 (48 %) 269 (82 %)
 UTI ABd 58,073 (4.7 %) 45,626 (4.0 %) 10,542 (11 %) 1905 (25 %) 1706 (24 %) 199 (61 %)
 Non UTI ABe 301,536 (24 %) 264,466 (23 %) 34,139 (36 %) 2931 (39 %) 2717 (38 %) 214 (65 %)
Mean antibiotic prescriptions per 100 inhabitants (SD) during 2011
 Any ABc 61 (171) 53 (146) 142 (325) 199 (401) 188 (388) 440 (567)
 UTI ABd 8 (560) 6 (440) 24 (116) 69 (222) 63 (209) 191 (394)
 Non UTI ABe 53 (154) 47 (134) 118 (290) 130 (311) 125 (306) 248 (391)
  1. aHampshire Health Record (HHR)
  2. bData on comorbidity using Quality and Outcomes Framework (QOF) register coding, a system for the performance management of general practitioners in the National Health Service in the UK
  3. cAll antibiotics except the antiseptic substance methenamine hippurate
  4. dTrimethoprim and nitrofurantoin, the dominant antibiotics used for urinary tract infection in the UK and rarely used for alternative conditions
  5. eAll other antibiotics than trimethoprim and nitrofurantoin