. Author manuscript; available in PMC: 2014 Jul 4.

Published in final edited form as: J Public Health Dent. 2012 Dec 5;73(1):1–8. doi: 10.1111/jphd.12000

Table 2. Correlations between Three Potential Scoring Methods and Various Assessments of Validity.

Score method (alpha)	TOFHLA	Oral health knowledge	OHIP	Medical materials	Years education	Overall health
OHLA-S pronunciation and comprehension (0.70)	0.53	0.26	0.29	0.28	0.44	0.18
OHLA-S comprehension extra credit (0.78)	0.58	0.16	0.32	0.26	0.44	0.13
OHLA-S pronunciation only (0.80)	0.56	0.02	0.35	0.20	0.34	0.06
OHLA-E pronunciation and comprehension (0.82)	0.49	0.33	0.48	0.32	0.31	0.05

Correlations in bold are P ≤ 0.05.

Medical Materials, three items measuring patients' difficulties in understanding written medical and dental materials; OHIP, Oral Health Impact Profile; OHLA-E, Oral Health Literacy Assessment in English; OHLA-S, Oral Health Literacy Assessment in Spanish; TOFHLA, Test of Functional Health Literacy in Adults.