Table A5.

Demographic characteristics of subpopulations based on most likely group membership.

	Gender		Ethnicity			Age (Time 5)		Deprivation	Education
	Female (%)	Male (%)	Maori (%)	Pacific (%)	Asian (%)	Age range	Mean age (SD)	Mean level (SD)	Mean level (SD)
Vaccine believers (N = 12826)	60.81	39.19	10.55	2.69	4.30	17–94	49.72 (14.30)	4.45 (2.70)	5.36 (2.78)
Vaccine skeptics (N = 3388)	67.89	32.11	19.45	4.90	4.78	18–94	50.03 (12.09)	5.02 (2.78)	4.53 (2.73)
Former skeptics (N = 1117)	64.87	35.13	17.46	5.55	4.48	18–82	48.90 (13.66)	4.96 (2.80)	4.83 (2.82)

Note: The current study initially aimed to make inferences about and look at population level trends in vaccine attitudes rather than identify the specific demographic breakdown of subpopulations. This is because our analyses were based on the probability of classification (not simple categorization) and thus, we need to be cautious about categorizing people into groups. Nevertheless, this data may inform the development of target vaccination interventions by helping identify groups of individuals most likely to fall into each subpopulation.

Ethnicity is not mutually exclusive (participants indicated all ethnic groups they identified with at each time point); Proportion for European is not included as it was used as reference category in the regression analysis that was used to obtain most likely class membership. Scale for deprivation (1=lowest, 10=highest) and education level (0=no qualification, 10=doctoral degree).