NHS health checks through general practice: randomised trial of population cardiovascular risk reduction

BMC Public Health

Table 3 Summary of multi-level model fit to log transformed CVD risk data

	Factor	Coefficient	Standard error	T-ratio	df	p-value
	Intercept	2.512	0.154	16.322	34	<0.001
Practice factors	IMDG	−0.079	0.039	−2.021	34	0.051
	SRG	0.000	0.009	0.028	34	0.978
	PRACSIZE	−0.026	0.017	−1.546	34	0.131
Individual factors	AGE	0.017	0.002	9.091	598	<0.001
	SEX	−0.256	0.033	−7.658	598	<0.001
Grouping factors	GROUP	−0.007	0.023	−0.287	1194	0.774
	TIME	−0.111	0.015	−7.501	1194	<0.001
	Variance components		Standard deviation		df	p-value
r₀	0.055		0.235		561	<0.001
e	0.036		0.189
u₀₀	0.002		0.042		34	0.027

CVD-cardiovascular disease; df-degrees of freedom.
Grouping variables: IMDG-socio-economic status; SRG-staggered recruitment group; PRACSIZE-practice size; AGE-age group; SEX-gender; GROUP-treatment; TIME-baseline or follow-up.
Variance components: r₀-between individuals; u₀₀-between practices; e-random error.

ISSN: 1471-2458