Multiple tutorial-based assessments: a generalizability study

BMC Medical Education

Table 2 Tutotest-lite estimated variance component for years 1 and 2

		Year 1			Year 2*
	Variance components	df	Estimates	Percent of total variability	df	Estimates	Percent of total variability
Students (s)	σ_s	383	0.01950	10	373	0.01407	8
Units (u)	σ_u	7	0.00294	2	7	0.00093	1
Clinical domains (c)	σ_c	2	0	0	3	0.00630	4
s × u (case specificity)	σ_su	2681	0.06787	36	2611	0.04591	28
s × c	σ_sc	766	0.00403	2	1119	0.00512	3
c × u	σ_uc	14	0.00014	0	21	0.00029	0
s × c × u + undifferentiated error variance	σ_{scu, e}	5362	0.09295	50	7833	0.09305	56

*The analysis was conducted using only the same three clinical domains included in Year 1. We then observed a 0% variability for the clinical domain facet.

ISSN: 1472-6920