Table 2.

Mean (± SD) General Knowledge, Salt Knowledge, and Self-Efficacy Scores at Baseline and the One-Month Follow-up Telephone Interview for Patients in the Brief Educational Intervention (BEI) and the Teach to Goal (TTG) Groups, Including Stratified Analyses According to Functional Health Literacy.^*

	Baseline		Follow Up		Absolute Change: Baseline to Follow-Up		Net Difference in Change Between Groups
	BEI	TTG	BEI	TTG	BEI	TTG	Difference (95% CI)	P
General Knowledge (8 items)
Overall	6.3 ±1.8	6.1 ±1.8	6.6 ±1.6	6.8 ±1.5	+0.30	+0.70	0.40 (0.11, 0.69)	0.008
Inadequate/ Marginal	5.5 ±1.9	5.4 ±2.0	5.9 ±1.9	6.2 ±1.7	+0.32	+0.80	0.48 (-0.13, 1.09)	0.12
Adequate	6.6 ±1.6	6.5 ±1.6	6.9 ±1.3	7.1 ±1.2	+0.29	+0.65	0.35 (0.04, 0.67)	0.03
Salt Knowledge (10 items)
Overall	7.7 ±1.4	7.4 ±1.5	8.1 ±1.6	8.3 ±1.5	+0.37	+0.90	0.52 (0.26, 0.79)	<0.001
Inadequate/ Marginal	7.3 ±1.6	6.8 ±1.7	7.4 ±1.9	7.5 ±1.6	+0.12	+0.71	0.59 (0.04, 1.15)	0.04
Adequate	7.9 ±1.2	7.7 ±1.3	8.4 ±1.4	8.7 ±1.2	+0.50	+0.99	0.50 (0.21, 0.78)	0.001
Self-Efficacy (10 items)
Overall	5.0 ±2.8	4.8 ±2.8	5.4 ±3.2	5.8 ±3.0	+0.38	+1.01	0.63 (0.16, 1.10)	0.009
Inadequate/Marginal	4.8 ±2.8	4.3 ±2.7	5.0 ±3.4	5.2 ±3.1	+0.19	+0.90	0.71 (-0.20, 1.63)	0.13
Adequate	5.1 ±2.8	5.0 ±2.8	5.6 ±3.1	6.1 ±2.9	+0.47	+1.06	0.59 (0.05, 1.14)	0.03

^*Health Literacy was measured with the short version of the Test of Functional Health Literacy in Adults.

SD indicated standard deviation and CI indicates confidence interval.