The acquisition and retention of ECG interpretation skills after a standardized web-based ECG tutorial–a randomised study

Table 3 Test scores, junior and senior students

	Mean score (SD)			Mean Δ score pre-test → post-test	Mean Δ score post-test → retention-test	Mean Δ score pre-test → retention-test
	Pre-test	Post-test	Retention-test*
Junior students, N = 84	45.5 (15.7)	62.0 (10.6)	56.2 (9.8)	16.5 (p < 0.001)	−5.8 (p < 0.001)	10.7 (p < 0.001)
Senior students, N = 119	57.8 (15.8)	72.9 (11.4)	62.5 (6.6)	15.1 (p < 0.001)	−10.5 (p < 0.001)	4.7 (p < 0.001)

*Pooled from follow-up intervals of all weeks (2–20 weeks).
The mean test scores and standard deviations of the pre-test, post-test and retention-test are reported for junior and senior students. The mean delta scores between pre-test and post-test, post-test and retention-test and pre-test and retention-test, respectively, are presented with associated p-values.