Table 3. Relative vaccine effectiveness of high-dose vs standard dose influenza vaccination and mortality during high influenza period, matched and adjusted using two-stage residual inclusion model, among predominantly male, white, senior veterans, United States, 2012/13–2014/15 (n = 569,552).
| Season | Influenza/pneumonia cause of death | Cardiorespiratory cause of death | All-cause hospitalisations (baseline) |
|---|---|---|---|
| rVE % (95% CI) | rVE % (95% CI) | rVE % (95% CI) | |
| 2012/13 | 29 (21 to 36) | 26 (2 to 44) | −7 (−21 to 5) |
| 2013/14 | 11 (−1 to 22) | 29 (27 to 30) | −6 (−11 to −2) |
| 2014/15 | 21 (11 to 30) | 31 (30 to 32) | 5 (2 to 8) |
| Pooled | 23 (17 to 28) | 30 (23 to 38) | −1 (−5 to 2) |
CI: confidence interval; rVE: relative vaccine effectiveness.