Table 3 Comparing guardians’ choice of different vaccines containing DTaP antigens before and after the vaccine incident.

Vaccines containing DTaP antigens	Number of doses in schedule		Number of doses administered		Proportion of administered doses out of doses in schedule, %			Number of doses delayed		Proportion of delayed doses out of administered doses, %
Vaccines containing DTaP antigens	Before incident	After incident	Before incident	After incident	Before incident	After incident	p-value^a	Before incident	After incident	Before incident	After incident	p-value^a
Overall 4 doses
Total	10 155	5 145	10 032	4 863	98.79	94.52	0.000	2 547	1 484	25.39	30.52	0.000
Trivalent^b			8 858	4 062	87.23	78.95	0.000	2 313	1 334	26.11	32.84	0.000
Quadrivalent/Pentavalent^c			1 174	801	11.56	15.57	0.000	234	150	19.93	18.73	0.506
Dose 1
Total	3 250	1 636	3 239	1 604	99.66	98.04	0.000	698	480	21.55	29.93	0.000
Trivalent			2 852	1 317	87.75	80.50	0.000	639	441	22.41	33.49	0.000
Quadrivalent/Pentavalent			387	287	11.91	17.54	0.000	59	39	15.25	13.59	0.546
Dose 2
Total	2 839	1 308	2 826	1 264	99.54	96.64	0.000	360	222	12.74	17.56	0.000
Trivalent			2 485	1 045	87.53	79.89	0.000	332	201	13.36	19.23	0.000
Quadrivalent/Pentavalent			341	219	12.01	16.74	0.000	28	21	8.21	9.59	0.573
Dose 3
Total	2 577	1 296	2 553	1 218	99.07	93.98	0.000	528	268	20.68	22.00	0.352
Trivalent			2 260	1 031	87.70	79.55	0.000	486	248	21.50	24.05	0.103
Quadrivalent/Pentavalent			293	187	11.37	14.43	0.006	42	20	14.33	10.70	0.246
Dose 4
Total	1 489	905	1 414	777	94.96	85.86	0.000	961	514	67.96	66.15	0.387
Trivalent			1 261	669	84.69	73.92	0.000	856	444	67.88	66.37	0.499
Quadrivalent/Pentavalent			153	108	10.28	11.93	0.207	105	70	68.63	64.81	0.519

^aChi-square test comparing the proportions of administered or delayed doses before and after the vaccine incident.
^bTrivalent vaccine was involved in the Changchun Changsheng vaccine incident and was funded by National Immunization Programme.
^cQuadrivalent DTaP-Hib and pentavalent DTaP-IPV/Hib vaccines were not involved in the Changchun Changsheng vaccine incident and were self-paid vaccines outside of National Immunization Programme.

Search