Factors associated with influenza vaccination status of residents of a rural community in Japan

Matsui, Daisuke; Shigeta, Masako; Ozasa, Kotaro; Kuriyama, Nagato; Watanabe, Isao; Watanabe, Yoshiyuki

doi:10.1186/1471-2458-11-149

BMC Public Health

Table 4 Factors regarding the health belief model associated with obtaining influenza vaccination.

From: Factors associated with influenza vaccination status of residents of a rural community in Japan

Age group	< 18 years (n = 141)				18 to 64 years (n = 634)				≥65 years (n = 366)
Factors regarding the health belief model	Vac	Unvac	OR* (95%CI)	P	Vac	Unvac	OR (95%CI)	P	Vac	Unvac	OR (95%CI)	p
Think that influenza vaccination (IV) is effective in preventing influenza illness
1. Strongly agree	26	17	10.5 (2.68, 41.7)	< 0.001	79	86	8.85 (4.61, 16.9)	< 0.001	179	16	19.9 (8.28, 48.0)	< 0.001
2. Moderately agree	29	45	4.53 (1.22, 16.7)	0.024	95	217	4.25 (2.27, 7.94)	< 0.001	72	37	3.36 (1.48, 7.61)	0.004
3-5. Not sure or moderately/strongly disagree	3	20	1.00		13	121	1.00		12	21	1.00
Think that IV has potential adverse effects
1-2. Strongly/moderately agree	30	26	1.20 (0.51, 2.82)	0.67	61	102	0.80 (0.52, 1.22)	0.31	43	12	0.34 (0.15, 0.78)	0.011
3. Not sure	1	18	0.04 (0.01, 0.41)	0.006	11	94	0.16 (0.08, 0.32)	< 0.001	18	13	0.13 (0.05, 0.32)	< 0.001
4. Moderately disagree	9	11	0.79 (0.24, 2.52)	0.69	30	67	0.63 (0.37, 1.05)	0.079	33	11	0.28 (0.11, 0.65)	0.003
5. Strongly disagree	18	18	1.00		86	119	1.00		172	17	1.00
Have practical barriers/inconveniences to obtaining IV at clinics
1-2. Strongly/moderately agree	18	22	1.31 (0.54, 3.14)	0.54	38	79	0.84 (0.51, 1.38)	0.49	17	15	0.13 (0.05, 0.31)	< 0.001
3. Not sure	3	17	0.27 (0.07, 1.10)	0.068	18	105	0.30 (0.16, 0.54)	< 0.001	26	13	0.24 (0.10, 0.57)	< 0.001
4. Moderately disagree	12	9	2.11 (0.72, 6.19)	0.17	65	110	1.08 (0.70, 1.68)	0.70	81	26	0.38 (0.19, 0.75)	0.006
5. Strongly disagree	18	27	1.00		65	116	1.00		138	17	1.00
Have often upper respiratory infection
1. Yes	7	14	0.89 (0.32, 2.50)	0.84	42	64	1.79 (1.13, 2.83)	0.013	63	13	2.02 (1.02, 4.03)	0.044
2. Not sure	30	49	1.83 (0.83, 4.04)	0.13	94	249	0.99 (0.65, 1.49)	0.96	116	49	1.33 (0.77, 2.28)	0.30
3. No	20	19	1.00		48	129	1.00		88	28	1.00
Feel vulnerable to influenza illness
1. Strongly agree	15	16	2.99 (1.02, 6.93)	0.045	24	20	5.06 (2.55, 10.0)	< 0.001	40	3	8.22 (2.36, 28.6)	< 0.001
2. Moderately agree	35	36			87	141	2.61 (1.69, 4.02)	< 0.001	116	32	2.13 (1.20, 3.76)	0.009
3. Not sure	6	14	1.51 (0.37, 6.06)	0.55	32	103	1.28 (0.76, 2.16)	0.34	46	19	1.49 (0.76, 2.94)	0.24
4-5. Strongly/moderately disagree	5	17	1.00		42	177	1.00		62	37	1.00
Be afraid that influenza illness may become severe when infected
1. Strongly agree	4	13	2.65 (1.01, 6.93)	0.047	20	26	2.86 (1.46, 5.59)	0.002	54	5	6.84 (2.47, 18.8)	< 0.001
2. Moderately agree	28	29			72	132	2.03 (1.31, 3.14)	0.001	121	32	2.38 (1.32, 4.29)	0.004
3. Not sure	19	16	4.25 (1.45, 12.4)	0.008	44	113	1.39 (0.86, 2.25)	0.17	34	19	1.14 (0.56, 2.32)	0.71
4-5. Strongly/moderately disagree	7	25	1.00		46	171	1.00		52	33	1.00
Had a hard experience with severe influenza illness previously
1. Yes	21	20	1.73 (0.79, 3.80)	0.16	53	91	1.65 (1.08, 2.52)	0.018	38	7	1.94 (0.82, 4.59)	0.12
2. No	27	44	1.00		87	244	1.00		178	63	1.00
3. Not sure/Don't know	10	19	0.97 (0.38, 2.46)	0.95	38	106	1.05 (0.68, 1.63)	0.81	50	22	0.81 (0.45, 1.44)	0.47

* Vac: Vaccinated, Unvac: Unvaccinated, OR: Odds ratio, CI: Confidence interval.
Note: ORs were adjusted for gender and year of survey.

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