Skip to main content

Table 1 Average statistics for these attributes of target participants in the 40 selected RCTs

From: Methodological review: quality of randomized controlled trials in health literacy

% Who are not the dominant ethnic group within that country

N = 38

% Low income (<= US $20 k/year)

N = 18

% With low or inadequate HL

N = 23

% with < 12 years of eductn or GED

N = 33

Mean age (yrs)

N = 40

Gender % F

N = 39

Latest observation point after intervention start (weeks)

N = 40

% clearly used a validated HL instrument

N = 40

57.7 (23–95)

54.7 (30–76)

43.3 (23–61)

36.5 (3–64)

52 (45–60)

63.7 (60–77)

23 (2–26)

73

  1. N = number of studies where data were available. Interquartile 25th–75th percentile range in parentheses