Table 1.

Selected Survey Measures

	Definition	Scale/Item	Cronbach’s Alpha
Self-Assessment
Time	Average time to interpret fetal heart images	1-item	NA
Ability- 4-chamber	Ability to interpret four chamber views	1-item	NA
Ability - outflow	Ability to interpret outflow tract views	1-item	NA
Determinants of Practice
Knowledge	Familiarity with screening guidelines, efficacy of fetal heart screening and current detection rates	5-item	TBD
Perceived Usefulness	Usefulness of obstetric cardiac screening	2-item	0.66
Self-efficacy	Belief about own ability to interpret screening images	6-item	0.82
Social/Professional Expectancies	Belief about whether screening is expected by peers, superiors or professional guidelines	3-item	0.82
Perceived Ease of Use	Degree to which screening is free of effort	4-item	0.89
Organizational Barriers	Infrastructure to allow for screening	3-item	0.70