Table 3.

Comparison of experimental conditions. No significant differences were observed between numeric-format and non-numeric-format groups or between CMI and label-only groups. P values ranged from .2 to .9.

			Non-numeric Formats
	Numeric Formats (n=610)	Non-Numeric Formats (n=295)	CMI List (n=155)	Label Only (n=140)
Gender (% female)	59.0%	62.4%	61.9%	62.9%
Mean Age in Years (SD)	54.9 (13.6)	54.5 (12.9)	54.3 (12.6)	54.8 (13.3)
Education (% Associate degree or less)*	51.6%	54.6%	57.4%	51.4%
Mean Household Income (SD) (11 = $40,000 to $49,999, 12 = $50,000 to $59,999)**	11.5 (3.0)	11.5 (3.2)	11.3 (3.4)	11.7 (3.1)
Use of Statins (% Yes)	39.5%	39.3%	36.8%	42.1%
Ethnicity (% White)	91.5%	89.5%	89.7%	89.3%
Mean Numeracy (SD) ***	4.1 (1.8)	4.1 (1.8)	4.0 (1.8)	4.2 (1.7)

^*We also compared mean values for the more detailed education categories collected. These original education categories ranged from 1 = less than first grade to 16 = doctorate degree. Respective means (SD) in the four columns above were 11.7 (2.1), 11.7 (2.1), 11.6 (2.1), and 11.8 (2.0). No significant differences emerged.

^**Income categories range from 1, less than $5,000, to 14, more than $75,000. Income groupings in Table 2 are aggregates of the more detailed categories that are reported here.

^***The numeracy scale consists of 8 items. The distribution covered the full possible range of 0–8 and did not vary significantly from a normal distribution. The percentage of respondents receiving each possible score is as follows: 0 correct = 2%, 1 = 4%, 2 = 14%, 3 = 18%, 4 = 20%, 5 = 17%, 6 = 13%, 7 = 8%, 8 correct = 3%.