| |
Cases
|
Controls
|
Unadjusted
|
Adjusted
|
|---|
| |
N
|
N
|
VE, %
|
95% CI
|
VE, %
|
95% CI
|
|---|
|
All strains
|
528
|
835
|
41.8
|
26.0, 54.3
|
42.8a
|
23.8, 57.0
|
|
Influenza A
|
182
|
301
|
50.4
|
23.9, 67.6
|
55.6b
|
23.4, 74.3
|
|
A/H1N1
|
89
|
142
|
71.7
|
41.7, 86.3
|
72.5c
|
30.5, 89.1
|
|
A/H3N2
|
56
|
105
|
31.0
|
−45.9, 67.5
|
86.1d
|
40.1, 96.8
|
|
Influenza B
|
346
|
534
|
37.3
|
16.0, 53.2
|
36.2e
|
10.0, 54.7
|
|
B/Victoria
|
81
|
126
|
47.1
|
3.4, 71.0
|
40.5f
|
−28.9, 72.6
|
|
B/Yamagata
|
188
|
292
|
28.7
|
−5.4, 51.8
|
32.3g
|
−8.3, 57.7
|
-
N number of patients, CI Confidence Interval, TIV trivalent influenza vaccine, VE vaccine effectiveness
- Covariate (p-value in model):
-
a Influenza vaccination (<0.001), age (0.378), anti-viral use before admission (0.902), admission from long term care facility (0.005), obesity (0.119), exposed to children aged <5 years in household (0.034), current or past smoker (0.000), medications before onset of illness (0.011);
-
b Influenza vaccination (0.004), age (0.264), anti-viral use before admission (0.766), admission from long term care facility (0.592), obesity (0.633), exposed to children aged <5 years in household (0.157), current or past smoker (0.376), medications before onset of illness (0.191);
-
c Influenza vaccination (0.006), age (0.093), anti-viral use before admission (0.814), admission from long term care facility (0.993), obesity (0.199), exposed to children aged <5 years in household (0.311), current or past smoker (0.188), medications before onset of illness (0.046);
-
d Influenza vaccination (0.008), age (0.022), admission from long term care facility (0.419), obesity (0.998), exposed to children aged <5 years in household (0.046), current or past smoker (0.571), medications before onset of illness (0.560);
-
e Influenza vaccination (0.010), age (0.791), anti-viral use before admission (0.471), admission from long term care facility (0.001), obesity (0.143), exposed to children aged <5 years in household (0.096), current or past smoker (0.000), medications before onset of illness (0.023);
-
f Influenza vaccination (0.188), age (0.215), admission from long term care facility (0.794), obesity (0.750), exposed to children aged <5 years in household (0.184), current or past smoker (0.025), medications before onset of illness (0.093);
-
g Influenza vaccination (0.103), age (0.021), anti-viral use before admission (0.456), admission from long term care facility (0.002), obesity (0.319), exposed to children aged <5 years in household (0.005), current or past smoker (0.004), medications before onset of illness (0.087);
