Table 1. Composition of total expenses (in CNY) across different groups, one year prior to and following vaccination.

Groups	Total expenses	Outpatient expenses	Proportion (%)	Hospitalization expenses	Proportion (%)	Self-purchased medicine expenses	Proportion (%)	Work-loss expenses	Proportion (%)	Other related expenses	Proportion (%)
Abbreviation: TIV=trivalent influenza vaccine; PPSV23=23-valent pneumococcal polysaccharide vaccine.
TIV group
Pre-	448,553.9	13,082.7	2.92	378,732.5	84.43	3,530.0	0.79	33,158.7	7.39	20,050.0	4.47
Post-	210,646.9	2,650.0	1.26	177,715.9	84.37	1,861.0	0.88	19,800.0	9.40	8,620.0	4.09
P	0.04	<0.001		0.12		0.24		0.19		0.01
PPSV23 group
Pre-	298,823.0	20,335.3	6.81	208,316.0	69.71	5,085.0	1.70	54,416.7	18.21	10,670.0	3.57
Post-	237,367.6	5,148.6	2.17	191,599.0	80.72	2,620.0	1.10	31,170.0	13.13	6,830.0	2.88
P	0.23	0.001		0.56		0.04		0.02		0.20
TIV&PPSV23 group
Pre-	1,193,468.4	33,564.4	2.81	1,008,669.9	84.52	8,106.0	0.68	83,688.0	7.01	59,440.0	4.98
Post-	625,897.3	28,570.8	4.56	507,948.9	81.16	2,476.0	0.40	52,811.7	8.44	34,090.0	5.45
P	<0.001	<0.001		<0.0001		<0.001		0.001		<0.001
Unvaccinated group
Pre-	488,660.3	9,354.5	1.91	434,474.8	88.91	5,221.0	1.07	29,990.0	6.14	9,620.0	1.97
Post-	409,567.3	8,446.7	2.06	358,754.9	87.59	6,558.0	1.60	24,927.7	6.09	10,880.0	2.66
P	0.26	0.44		0.49		0.50		0.43		0.92