Table 4.
Modelleda estimates of annual antibiotic use (and 99% CIs) across 68 RAC homes, 2015–2017
| 2015 (n = 6528) |
2016 (n = 6579) |
2017 (n = 5908) |
|
|---|---|---|---|
| All antibiotics | |||
| Days of therapy/1000 resident days | 81.57 (75.38, 87.75) | 83.30 (77.95, 88.64) | 85.06 (78.56, 91.57) |
| Number of courses/1000 resident days | 7.60 (7.19, 8.01) | 7.81 (7.49, 8.12) | 8.01 (7.57, 8.46) |
| Percent of residents with at least one course of antibiotics | 68.39 (66.93, 69.85) | 65.94 (64.90, 67.00) | 63.44 (61.87, 65.01) |
| WHO Watch List antibiotics | |||
| Days of therapy/1000 resident days | 8.78 (7.61, 9.92) | 8.23 (7.46, 9.00) | 7.73 (6.69, 8.77) |
| Number of courses/1000 resident days | 1.07 (0.94, 1.20) | 0.99 (0.90, 1.08) | 0.92 (0.80, 1.03) |
| Percent of residents with at least one course of antibiotics | 17.02 (15.85, 18.19) | 15.17 (14.39, 15.95) | 13.46 (12.38, 14.55) |
CI is confidence interval.
aModelled using generalised estimating equations with fixed effects for RAC home, resident presence in winter months (May to September). Models are adjusted for resident demographics and comorbidities