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Table 3 Measurement invariance of the knowledge test in Study 2

From: Development, validation and assessment of the test on knowledge about basic life support and use of automated external defibrillator among schoolchildren

 Correct answersMann-Whitney UZpr
GenderPre-test36,561,5- 4,19< 0,0010,17
Post-test36,522,5- 4301< 0,0010,18
School GradePre-test33,740− 5704< 0,0010,23
Post-test35,103− 5178< 0,0010,21
Attendance to previous coursesPre-test610,5− 10310,3030,11
Post-test617,5−0,9950,320,11
  1. Note: Z – z value; r - effect size