Table 1.

Average scores on the knowledge pre/post-test, by module, total modules = 1,750

Course name	N	Average pre-test (% correct)	Average post-test (% correct)	Statistically significant (y/n?)
Pediatrics	372	59.7 (st dev = 15%)	70.7 (st dev = 16%)	Yes, p<0.001
				Cohen's d = 0.71
				Med-high effect size
Complex inheritance: genetics of common complex disorders	628	60.9 (st dev = 16%)	74.7 (st dev = 15%)	Yes, p<0.001
				Cohen's d = 0.9
				Large effect size
Presymptomatic testing: genetic testing for breast and ovarian cancer risk	189	63.3 (st dev = 13.8%)	72.8 (st dev = 11.7%)	Yes, p<0.001
				Cohen's d = 0.76
				Med-large effect size
Newborn screening	184	43.6 (st dev = 19.2%)	70 (st dev = 17.6%)	Yes, p<0.001
				Cohen's d>1.0
				Large effect size
Prenatal genetic testing	377	54 (st dev = 17.8%)	79.2 (st dev = 16.6%)	Yes, p<0.001
				Cohen's d>1.0
				Large effect size