Table 1

Parent characteristics

		N	%
Site	London	37	62
Site	Yorkshire	23	38
Gender	Male	5	8
Gender	Female	55	92
Ethnicity	White British	33	55
	White other	10	16
	Black British Caribbean	4	7
	Black African	5	8
	Asian Chinese	1	2
	Asian other	4	7
	Missing	3	5
Highest educational qualification	GCSE or equivalent	6	10
	A level or equivalent	15	25
	Bachelor degree or higher	33	55
	Missing	6	10
No. of children	One	39	65
	More than one	20	33
	Missing	1	2
Self-reported Immunisation Status of children	Full	55	92
	Partial	3	5
	None	1	2
	Missing	1	2
		Mean (SD)	Range
Mean age of parent (years)		31.6 (5.10)	20–43
Mean age of children under 2 years (months)		8.7 (5.60)	12 days to 24 months