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Table 3 Students’ results and distribution according pretest results quartiles

From: Blended learning of radiology improves medical students’ performance, satisfaction, and engagement

 nPretest*Posttest*Delta overall*
Overall353 (100.0)73.0 ± 12.177.7 ± 17.6+4.7 ± 17.5
Quartiles**
 Quartile 1
  Low achievers89 (25.2)57.2 ± 12.765.6 ± 24.6+ 11.3 ± 22.8
 Quartile 2
  Low-intermediate achievers88 (24.9)70.7 ± 7.775.6 ± 22.3+ 8.3 ± 15.7
 Quartile 3
  High-intermediate achievers90 (25.5)76.8 ± 8.472.6 ± 251.66 ± 14.4
 Quartile 4
  High achievers86 (24.4)85.7 ± 9.982.1 ± 21.3− 3.6 ± 19
P values** NAP = 10−7P = 10−9
  1. Data are expressed in number of students (n), percentage, and mean ± standard deviation. *Scores are expressed in absolute value for a 100-point test.**ANOVA analysis for each quartile