Table 3.

Accuracy measures pre- and postintervention, by health system level and province.

Level and indicator				Data source		Hanoi							Son La
						Preintervention		Postintervention		P value		Preintervention		Postintervention		P value
Overall
	Demographic information, n			N/Aa		217		353		N/A		119		107		N/A
		Clients with demographic information matched between personal immunization card and the NIISb, n (%)	HHc survey		199 (91.7)		340 (96.3)		.02		101 (84.9)			107 (100)	<.001
	Immunization information, n			N/A		2188		3981		N/A		1216		1097		N/A
		Injections with immunization information matched between personal immunization card and the NIIS, n (%)	HH survey		2147 (98.12)		3786 (95.10)		.01		1037 (85.27)			1097 (100)	<.001

^aN/A: not applicable.

^bNIIS: National Immunization Information System.

^cHH: household.