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Table 1 Characteristics of 9793 unique residents in 68 RAC homes, 2014–2017

From: Trends, determinants and differences in antibiotic use in 68 residential aged care homes in Australia, 2014–2017: a longitudinal analysis of electronic health record data

Characteristics of residentsa 2014b
(n = 5325 residents)
2015
(n = 6528 residents)
2016
(n = 6579 residents)
2017c
(n = 5908 residents)
Total resident days 491,045 1,733,701 1,726,336 1,279,133
Females 71.1% 69.0% 67.8% 67.7%
Age, mean (SD) 85.5 (8.1) 85.8 (8.1) 85.8 (8.1) 85.9 (8.1)
Age females, mean (SD) 86.7 (7.6) 87.1 (7.7) 87.1 (7.7) 87.2 (7.8)
Age males, mean (SD) 82.5 (8.3) 83.1 (8.3) 83.1 (8.2) 83.4 (8.2)
Age at admission, mean (SD) 82.6 (8.6) 82.9 (8.5) 82.8 (8.5) 82.7 (8.6)
Comorbidities
 Dementia 56.5% 56.7% 55.1% 54.5%
 Chronic respiratory disease 35.8% 35.7% 35.9% 34.4%
 Urinary incontinence 39.0% 44.7% 46.3% 48.5%
 History of urinary tract infection 15.0% 15.1% 15.1% 14.5%
 History of wound 5.1% 5.7% 5.4% 5.3%
 History of skin and soft tissue infections 5.2% 5.6% 5.7% 5.3%
History of resistant infectious organisms
 MRSA 3.8% 4.0% 3.9% 3.4%
 Clostridioides difficile 0.2% 0.3% 0.3% 0.3%
 ESBL 0.2% 0.2% 0.2% 0.3%
In-dwelling catheter 3.0% 3.3% 3.2% 3.0%
  1. SD is standard deviation. MRSA is methicillin-resistant Staphylococcus aureus. ESBL is extended spectrum beta-lactamases.
  2. aThe characteristics are calculated for the total number of residents present in RAC homes during the study period. Thus, for categorical variables, the denominator used is the number of residents
  3. bData available for September through December in 2014.
  4. cData available for January through September in 2017.