Table 4 Vaccination effectiveness in those age 65 years and over (excluding very high risk) with equivalent number needed to vaccinate (NNV) estimates
Group | Number of vaccinated cases | Total number of cases | % Vaccination Effectiveness (95% CI) | Equivalent Number Needed to Vaccinate #(NNV) with 95% CI |
|---|---|---|---|---|
Age 65+ years | Â | Â | Â | Â |
   All |  |  |  |  |
Crude | 57 | 135 | 64.2 (49.6, 74.5) | - |
Adjust | Â | Â | 61.7 (45.1, 73.2) | 5206 (4388, 7122) |
(Age/Sex) | 30 | 59 | 53.5 (22.5, 72.1) | 6059 (4499, 14407) |
   Male | 27 | 76 | 71.1 (53.7, 81.9) | 9835 (3987, 5944) |
   Female |  |  |  |  |
Age 65–74 years |  |  |  |  |
   All | 23 | 49 | 54.4 (20.1, 74.0) | 9724 (7148, 26317) |
   Male | 13 | 24 | 41.0 (-31.7, 73.6) | (10726) § |
   Female | 10 | 25 | 64.6 (21.1, 84.1) | 9835 (7554, 30110) |
Age 75+ years | Â | Â | Â | Â |
   All | 34 | 86 | 68.8 (52.0, 79.8) | 3145 (2712, 4162) |
   Male | 17 | 35 | 60.5 (23.3, 79.6) | 3801 (2895, 9891) |
   Female | 17 | 51 | 73.9 (53.3, 85.4) | 2836 (2454, 3932) |