Table 3.

Factors associated with the willingness to accept pneumococcal vaccine in the elderly population.

Question	OR	Model I a	p-Value	OR	Model II b	p-Value
		95%CI			95%CI
Have you known about pneumonia
No	ref.			ref.
Yes	1.475	1.291–1.687	<0.001	1.391	1.214–1.593	<0.001
Pneumonia is a serious disease in older adults
No	ref.			ref.
Yes	1.508	1.293–1.758	<0.001	1.437	1.230–1.680	<0.001
Pneumococcal vaccine is effective for preventing Streptococcus pneumoniae in elderly people
No	ref.			ref.
Yes	1.567	1.382–1.777	<0.001	1.639	1.440–1.865	<0.001
Streptococcus pneumoniae leads to pneumonia, sepsis, and meningitis
No	ref.			ref.
Yes	1.020	0.906–1.147	0.748	1.040	0.920–1.175	0.534
Older adults are susceptible to pneumonia
No	ref.			ref.
Yes	1.058	0.940–1.190	0.351	1.091	0.966–1.233	0.161
Would you worry about getting pneumonia
No	ref.			ref.
Yes	2.837	2.524–3.189	<0.001	2.751	2.444–3.096	<0.001
Have you known the local pneumococcal vaccination policy
No	ref.			ref.
Yes	1.667	1.427–1.948	<0.001	1.774	1.514–2.079	<0.001
Have you ever received the seasonal influenza vaccine
No	ref.			ref.
Yes	3.190	2.059–4.944	<0.001	3.516	2.261–5.468	<0.001
Have you received the pneumococcal vaccine in the past 5 years
No	ref.			ref.
Yes	2.969	1.266–5.740	0.010	3.199	1.492–6.860	0.003

OR, odds ratio; CI, confidence interval. ^a Model I was not adjusted. ^b Model II was after adjustment for age, gender, marital status, education level, household income, examination, smoking, excise, chronic respiratory diseases, hypertension, and diabetes.