Year | Calendar period of vaccination | ||||
1–30 September | 1–15 October | 16–31 October | 1–30 November | Total | |
1999 | 0.29 (0.20–0.43);10 | 0.25 (0.20–0.32); 37 | 0.39 (0.31–0.49); 46 | 0.42 (0.28–0.63); 19 | 0.32 (0.27–0.37); 100 |
2000 | 0.20 (0.12–0.34); 7 | 0.30 (0.25–0.36); 46 | 0.35 (0.27–0.44); 30 | 0.50 (0.34–0.73); 16 | 0.32 (0.28–0.37); 100 |
Data are presented as hazard ratio (95% confidence interval); percentage of vaccinated subjects.