Table 3. Costs (in CNY) per person of AECOPD, pneumonia, and related hospitalization pre-vaccination and post-vaccination.

variable	TIV group				PPSV23 group				TIV&PPSV23 group				Unvaccinated group
	No. of cases	Pre-	Post-		No. of cases	Pre-	Post-		No. of cases	Pre-	Post-		No. of cases	Pre-	Post-
Abbreviation: TIV=trivalent influenza vaccine; PPSV23=23-valent pneumococcal polysaccharide vaccine; AECOPD=acute exacerbation of chronic obstructive pulmonary disease.
Age (years)
<65	41	4,337.3	509.4		23	3,015.8	2,327.3		125	3,815.9	1,550.8		151	1,402.5	1,103.2
≥65	68	3,981.2	2,790.6		46	4,988.2	3,996.5		171	4,189.9	2,526.6		137	2,021.1	1,773.6
Gender
Male	94	4,668.2	2,148.4		52	5,433.3	4,541.7		226	4,419.3	2,769.5		214	1,992.2	1,724.4
Female	15	649.7	579.8		17	958.2	70.6		70	2,781.6	0.0		74	842.3	547.9
Occupation
Coal miner	79	5,532.3	2,666.4		41	6,435.2	4,887.2		230	4,460.6	2,717.3		202	1,873.3	1,818.0
Other	30	383.3	0.0		28	1,249.3	1,321.1		66	2,538.2	13.8		86	1,281.9	492.3
Severity of COPD
Mild	12	1,965.5	2,534.1		13	639.5	3,311.2		39	1,073.8	479.2		43	362.6	739.8
Moderate	40	3,817.0	952.4		18	3,083.9	2,469.4		120	4,417.7	1,717.2		105	1,687.0	771.4
Severe	40	4,866.5	2,676.7		21	8,755.9	6,622.5		101	5,075.2	2,200.5		82	1,862.5	2,027.3
Very severe	17	4,566.3	2,063.2		17	3,007.3	635.3		36	3,024.2	4,969.5		58	2,469.2	2,250.3
Comorbidities
Yes	76	3,531.7	2,164.7		42	4,512.6	4,005.5		193	3,788.1	2,310.4		134	2,474.4	1,746.0
No	33	5,459.0	1,397.9		27	4,047.9	2,560.6		103	4,489.0	1,747.5		154	1,020.0	1,140.3
Smoking
Yes	53	5,353.8	2,081.2		26	4,234.6	2,404.5		100	4,581.2	2,112.0		82	1,791.4	1,096.7
No	56	2,942.9	1,791.8		43	4,388.9	4,066.3		196	3,751.8	2,115.8		206	1,659.1	1,551.7
Total	109	4,115.2	1,932.5		69	4,330.8	3,440.1		296	4,032.0	2,114.5		288	1,696.7	1,422.1