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Table 3 Predictors of prescriptions of any antibioticsa among those ≥75 yearsb

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

  Unadjusted odds ratio Adjusted odds ratioc
(95 % CI; p-value) (95 % CI; p-value)
Care home resident 1.37 (1.31–1.44; p < 0.001) 1.24 (1.18–1.30; p < 0.001)
Female 1.27 (1.24–1.31; p < 0.001) 1.29 (1.25–1.32; p < 0.001)
Age 1.01 (1.01–1.01; p < 0.001) 1.00 (0.99–1.00; p = 0.849)
Urinary catheter 4.78 (4.27–5.37; p < 0.001) 4.72 (4.20–5.32; p < 0.001)
Comorbidity   
 • None 1.00 1.00
 • One 1.83 (1.75–1.92; p < 0.001) 1.82 (1.74–1.91; p < 0.001)
 • Two 2.33 (2.23–2.43; p < 0.001) 2.28 (2.18–2.39; p < 0.001)
 • Three or more 3.33 (3.20–3.46; p < 0.001) 3.22 (3.10–3.35; p < 0.001)
  1. aAll antibiotics except the antiseptic substance methenamine hippurate
  2. bAll ≥75 years not prescribed long term prophylaxis against recurrent UTI, both in care homes and not in care homes (N = 101,373)
  3. cCare home resident status adjusted for gender, age, presence of urinary catheter and number of comorbidity according to Quality and Outcomes Framework