Risk Periods | Number of Hospitalisations | Person-Years | Adjusted age and study month only RR(95% CI) | Adjusted* RR(95% CI) |
---|---|---|---|---|
Baseline unexposed Period | ||||
Unexposed | 3275 | 2660 | 1.00 (1.00 - 1.00) | 1.00 (1.00 - 1.00) |
Pre-exposure to a beta blocker for heart failure | ||||
6-8 weeks | 18 | 22 | 1.37 (0.93 - 2.01) | 1.29 (0.88 - 1.89) |
4-6 weeks | 52 | 23 | 3.74 (2.90 - 4.82) | 3.47 (2.70 - 4.46) |
2-4 weeks | 87 | 24 | 5.85 (4.72 - 7.26) | 4.97 (4.02 - 6.16) |
1 day-2 weeks | 255 | 25 | 15.98 (13.51 - 18.91) | 12.72 (10.74 - 15.07) |
Post-exposure to a beta blocker for heart failure | ||||
1 day-2 weeks | 46 | 25 | 2.85 (2.18 - 3.72) | 2.21 (1.70 - 2.88) |
2-4 weeks | 25 | 23 | 1.63 (1.16 - 2.29) | 1.29 (0.92 - 1.80) |
1-4 months | 94 | 107 | 1.34 (1.08 - 1.67) | 1.18 (0.94 - 1.47) |
4-8 months | 46 | 76 | 0.78 (0.58 - 1.04) | 0.76 (0.57 - 1.02) |
8-12 months | 15 | 24 | 0.66 (0.42 - 1.05) | 0.62 (0.39 - 0.99) |