BMC Health Services Research

Table 4 F and P values from F-test and general linear regression analyses

From: Age, period and cohort analysis of patient dental visits in Australia

	Degrees of freedom			F value	P-value
Models	k	m	n-k-m-1
Age & age drift	13	13	2761	9.66	<0.005
Age drift & age-period	14	14	2756	8.88	<0.005
Age drift & age-cohort	14	14	2744	13.96	<0.005
Age-period-Cohort & age-Cohort	29	29	2741	5.64	<0.005
Age-period-Cohort & age-Period	18	18	2740	11.52	<0.005

Notes: n was number of observations (see Table 3); k was degrees of freedom in the general linear regression model; m was additional variables, such as drift, age, period and cohort or their combination.

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ISSN: 1472-6963

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