Table 1:

Demographic characteristics of National Health Service Health Check attendees and nonattendees before and after matching (n = 138 788)

Characteristic	Group; % of group before matching^*			Group; % of group after matching^*

	Attendees n = 29 672	Nonattendees n = 109 116	p value	Attendees n = 29 672	Nonattendees n = 29 672^†	p value
Age, yr, mean	53.5	50.1	< 0.001	53.5	53.4	0.2

Sex, female	52.6	50.0	< 0.001	52.6	52.6	0.9

Ethnicity

White	71.9	54.8	< 0.001	71.9	71.4	0.2

Nonwhite	7.7	5.0	< 0.001	7.7	7.6	0.6

Missing	20.2	40.1	< 0.001	20.2	20.9	0.054

IMD

Quintile 1 (least deprived)	18.0	19.4	< 0.001	18.0	18.1	0.7

Quintile 2	21.7	21.9	0.5	21.7	21.9	0.5

Quintile 3	19.7	22.4	< 0.001	19.7	20.0	0.3

Quintile 4	21.1	20.4	0.004	21.1	20.9	0.5

Quintile 5 (most deprived)	19.3	15.7	< 0.001	19.3	18.7	0.1

Region

North East	2.8	2.0	< 0.001	2.8	2.5	0.04

North West	18.4	13.8	< 0.001	18.4	17.9	0.08

Yorkshire and Humber	2.7	3.4	< 0.001	2.7	2.7	0.9

East Midlands	2.8	4.7	< 0.001	2.8	2.8	0.9

West Midlands	11.4	10.1	< 0.001	11.4	11.4	0.7

East of England	10.0	10.9	< 0.001	10.0	10.2	0.3

South West	9.0	11.6	< 0.001	9.0	9.4	0.1

South Central	14.1	15.4	< 0.001	14.1	14.3	0.5

London	16.9	13.6	< 0.001	16.9	16.5	0.2

South East Coast	11.3	14.1	< 0.001	11.3	11.8	0.054

Note: IMD = index of multiple deprivation (2010).
↵* Unless indicated otherwise.
↵† Resultant sample size once kernel weight from propensity score matching was applied.