|
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
| | | | |
|
All
| | | | |
|
Crude
|
57
|
135
|
64.2 (49.6, 74.5)
|
-
|
|
Adjust
| | |
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
| | | | |
|
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)
|
- * Vaccination effectiveness as determined by the screening method (see Methods)
- # NNV: number needed to vaccinate to prevent one case (calculated as 1/attributable risk; based on equivalent annual incidence of IPD in 2003/2004.
- §Hypothetical value for NNV given non-significant test result
