Characteristics of case patients | No. of sets | No. (% vaccinated) | Unadjusted analysis | Adjusted analysis | |||
---|---|---|---|---|---|---|---|
Case patients | Control subjects | ORa (95% CI) | p value | ORb (95% CI) | p value | ||
Age strata | |||||||
60-79 yrs | 51 | 17 (33.3) | 56 (54.9) | 0.36 (0.17-0.78) | 0.010 | 0.32 (0.14-0.74)d | 0.007 |
80 yrs or more | 37 | 7 (45.9) | 48 (64.9) | 0.30 (0.10-0.86) | 0.026 | 0.29 (0.09-0.91)e | 0.034 |
Risk strata c | |||||||
Stratum 1 | 29 | 11 (37.9) | 36 (62.1) | 0.31 (0.11-0.89) | 0.029 | 0.12 (0.03-0.53)f | 0.005 |
Stratum 2 | 41 | 18 (43.9) | 53 (64.6) | 0.32 (0.13-0.79) | 0.014 | 0.29 (0.11-0.79)g | 0.015 |
Stratum 3 | 18 | 5 (27.8) | 15 (41.7) | 0.48 (0.12-1.91) | 0.294 | 0.40 (0.09-1.89)h | 0.249 |