Table 1.

Cronbach’s Alpha for Knowledge Domain (After Excluding Items 5 and 7).

			Correlation
Item	Question	Sign	Item-Test	Item-Rest	Interitem	Alpha
1	Prenatal care should include a dental screening	+	0.7304	0.6029	0.2136	0.6553
2	Dental treatment should be a part of prenatal care	+	0.7187	0.5872	0.2162	0.6588
3	Women should see a dentist during pregnancy	+	0.7597	0.6427	0.207	0.6464
4	Pregnant women should receive only emergency dental care	—	0.4316	0.2343	0.28	0.7313
6	It is unsafe to obtain dental radiographs in pregnant women	—	0.3427	0.1354	0.2997	0.7498
8	Oral bacteria (e.g., strep mutans) are transmitted from mother to child.	+	0.4842	0.2948	0.2683	0.7196
9	A mother’s oral health is related to her child’s oral health.	+	0.5998	0.4342	0.2426	0.6915
10	There are national and/or state practice guidelines for the oral health of pregnant women.	+	0.6007	0.4352	0.2424	0.6913
	Test scale				0.2462	0.7232

Analysis is based on a sample that answered all knowledge, attitude, and willingness questions (N = 86).