Factors Affecting Medical Students’ Uptake of the 2009 Pandemic Influenza A (H1N1) Vaccine
Table 3
Determinants of vaccine uptake in the vaccine offered group.
Variables
Numbers receiving vaccine (%)
Univariate analysis
Multivariate analysis: model 1a
Multivariate analysis: model 2 including term for previous seasonal vaccinationb
Sex
Male
14 (22.6)
1.0
1.0
1.0
Female
48 (77.4)
0.6 (0.3–1.4)
1.1 (0.4–2.6)
1.4 (0.4–4.7)
Ethnicity
White
45 (72.6)
1.0
1.0
1.0
Nonwhite
17 (27.4)
0.4 (0.2–0.8)
0.4 (0.2–0.8)
0.3 (0.1–0.8)
Smoking status
Never smoker
58 (93.5)
1.0
Ever smoker
4 (6.5)
0.7 (0.2–2.5)
Chronic illness
No
48 (77.4)
1.0
1.0
1.0
Yes
14 (22.6)
3.4 (1.2–10.2)
3.5 (1.0–12.1)
1.8 (0.3–9.9)
Year of study
GEC 1 and
3 (4.8)
0.6 (0.1–2.3)
0.3 (0.1–1.6)
0.3 (0.02–3.2)
Year 2
36 (58.1)
1.0
1.0
1.0
Year 3
23 (37.1)
3.0 (1.3–7.1)
2.6 ( 1.0–6.7)
5.2 (1.6–17.4)
Years 4 and 5
Lives with 1 of more risk groups
No
49 (79.0)
1.0
Yes
13 (21.0)
0.7 (0.3–1.6)
Seasonal influenza vaccination history
Never
22 (35.5)
1.0
1.0
Previous years
10 (16.1)
1.6 (0.6–4.1)
3.0 (0.8–10.8)
Knows anyone who contracted H1N1
No
18 (29.0)
1.0
Yes
44 (71.0)
0.7 (0.3–1.5)
Number of correct answers
None
11 (17.7)
1.0
1.0
1.0
At least 1 correct answer
51 (82.3)
2.6 (1.1–6.0)
2.4 (1.0–6.0)
3.1 ( 0.9–11.2)
aAdjusted for sex, ethnicity, year, of study and knowledge.
bAdjusted for sex, ethnicity, year of study, knowledge, and previous seasonal influenza vaccine.
