Table 4 IRRs of infection-related hospital admissions in months 3–6 after stratified by the level of propensity and quintile of prior antibiotic use
Propensity for lowest prior antibiotic use | ||||||
|---|---|---|---|---|---|---|
Low | Middle | High | Low | Middle | High | |
% in groups# | % in groups# | % in groups# | IRR (95% CI)& | IRR (95% CI)& | IRR (95% CI)& | |
Quintiles of prior antibiotic use | ||||||
CPRD | ||||||
Low vs lowest | 41.4% vs 29.4% | 33.5% vs 32.8% | 25.1% vs 37.8% | 1.21 (1.02–1.45) | 1.34 (1.00–1.79) | 1.15 (0.75–1.75) |
Middle vs lowest | 45.8% vs 25.4% | 33.4% vs 32.7% | 20.8% vs 41.9% | 1.38 (1.18–1.61) | 1.38 (1.09–1.75) | 1.33 (0.91–1.94) |
High vs lowest | 53.7% vs 21.3% | 32.5% vs 33.3% | 13.8% vs 45.4% | 1.75 (1.48–2.06) | 1.74 (1.38–2.19) | 2.52 (1.45–4.37) |
Highest vs lowest | 69.1% vs 16.6% | 25.7% vs 36.3% | 5.2% vs 47.1% | 2.17 (1.79–2.64) | 2.88 (2.04–4.07) | 5.72 (2.08–15.76) |
SAIL | ||||||
Low vs lowest | 41.7% vs 27.7% | 33.5% vs 32.6% | 24.8% vs 39.7% | 1.22 (1.06–1.41) | 1.42 (1.19–1.69) | 1.56 (1.18–2.07) |
Middle vs lowest | 50.5% vs 25.3% | 32.3% vs 33.4% | 17.2% vs 41.4% | 1.50 (1.29–1.74) | 1.83 (1.44–2.34) | 1.82 (1.28–2.59) |
High vs lowest | 57.5% vs 21.5% | 30.5% vs 34.3% | 12.0% vs 44.2% | 1.72 (1.47–2.02) | 2.62 (2.12–3.24) | 3.67 (2.51–5.35) |
Highest vs lowest | 69.3% vs 15.8% | 25.2% vs 37.1% | 5.6% vs 47.2% | 2.13 (1.74–2.61) | 3.27 (2.60–4.12) | 3.01 (1.69–5.37) |