Table 3.

Mixed model results for Module 1 and 2 knowledge test total scores (number correct), adjusted for clustering within facility.

	un-adjusted means				un-adjusted paired t-test			Adjusted mean differences and standard errors (se)
n	pre test		post test		differences mean	differences standard error of the mean	sig	estimate	se	sig
	mean	std. dev.	mean	std. dev.
M1319	7.43	1.16	8.13	1.29	-.696	.088	<.001	-.696	.115	<.001
M2271	7.40	1.54	8.38	1.52	-.974	.097	<.001	-.964	.128	<.001

The covariance structure used in the mixed models was identity.