Table 4.

Stratified analysis to compare the length of stay and medical expenditure for influenza-related complications of individuals with different severities of disability between the vaccinated and unvaccinated cohorts.

	Length of Stay			Medical Expenditure
Disability Severity	Exp (b)	95% CI		p-Value	Exp (b)	95% CI		p-Value
Influenza and Pneumonia
Mild	0.95	0.94	0.96	<0.001	0.92	0.87	0.97	0.001
Moderate	0.94	0.93	0.95	<0.001	0.90	0.86	0.95	<0.001
Severe	0.90	0.89	0.91	<0.001	0.85	0.81	0.90	<0.001
Very severe	0.87	0.87	0.88	<0.001	0.87	0.83	0.92	<0.001
Respiratory Diseases
Mild	0.91	0.91	0.92	<0.001	0.90	0.86	0.94	<0.001
Moderate	0.92	0.91	0.93	<0.001	0.89	0.85	0.93	<0.001
Severe	0.87	0.87	0.88	<0.001	0.85	0.81	0.89	<0.001
Very severe	0.83	0.83	0.84	<0.001	0.84	0.80	0.88	<0.001
Respiratory Failure
Mild	0.91	0.90	0.92	<0.001	0.93	0.86	1.01	0.105
Moderate	0.93	0.92	0.94	<0.001	0.92	0.86	0.99	0.031
Severe	0.86	0.85	0.87	<0.001	0.88	0.81	0.95	0.002
Very severe	0.84	0.83	0.85	<0.001	0.88	0.81	0.96	0.004

Note: CI, confidence interval. All models were analyzed via the generalized estimating equation. Extraneous factors adjusted in the model contained type of disability, age, sex, premium salary, urbanization level, CCI score, catastrophic illness status, long-term care facility residents, outpatient utilization, hospital admission, and preventive care service utilization.