Participation in and attitude towards the national immunization program in the Netherlands: data from population-based questionnaires

Table 1 Overview of question-and-answer categories regarding vaccination included in the analyses

Question	Answer categories	First survey, NS	First survey,	Second survey, NS^a	Second survey,
			LVC		LVC
		N (%)	N (%)	N (%)	N (%)
1. Did you/does your child participate in the NIP?^b	Yes	5951 (96)	992 (79)	4420 (94)	940 (73)
	No	143 (2)	242 (19)	141 (3)	330 (25)
	Don't know^c	109 (2)	18 (2)	127 (3)	26 (2)
		64 ^d	6 ^d	41 ^d	6 ^d
2. Do you intend to accept any remaining vaccinations for your child?^e	1. Surely yes	NA	NA	1418 (68)	291 (46)
	2. Yes			484 (23)	148 (23)
	3. Probably yes			75 (4)	35 (5)
	4. Unsure			28 (1)	13 (2)
	5. Probably not			13 (1)	24 (4)
	6. Surely not			7 (0)	82 (13)
	7. Not applicable^f			52 (3)	45 (7)
				83 ^d	5 ^d
3. Has your/parents' opinion on vaccination changed with respect to the five years preceding the survey?^b	1. No	5514 (90)	1101 (89)	3866 (83)	1086 (84)
	2. Yes, more inclined	517 (8)	112 (9)	311 (7)	81 (6)
	3. Yes, less inclined	128 (2)	28 (2)	147 (3)	61 (5)
	4. Don't know	NA	NA	315 (7)	66 (5)
		108 ^d	17 ^d	90 ^d	8 ^d

^aIncluding oversampling of non-Western migrants in the NS of the second survey
^bIncluding participants aged less than 45 years and first-generation migrants aged less than 13 years
^cCategory "Don't know" was omitted from the analyses
^dNumber of missing answers at a specific question
^eIncluding participants aged less than 10 years
^fCategory "not applicable" was omitted from the analyses

ISSN: 1471-2458