Skip to main content
. 2012 Apr 12;27(9):1165–1170. doi: 10.1007/s11606-012-2046-0

Table 2.

Readability Statistics

PEM database Micromedex MedlinePlus EBSCO
Readability Index Flesch–Kincaid Gunning Fog SMOG Flesch–Kincaid Gunning Fog SMOG Flesch–Kincaid Gunning Fog SMOG
Mean Grade Reading Level (SD) 7.7 (0.8) 8.6 (0.9) 9.4 (0.7) 8.5 (1.6) 10.2 (1.9) 10.4 (1.3) 8.4 (1.0) 9.7 (1.3) 9.7 (0.7)
% PEMs above 8th Grade Level 31% 74% 96% 63% 90% 98% 68% 89% 100%
Average # of Grades Above Target Readability 0.5 1.0 1.5 1.4 2.5 2.4 0.9 1.9 1.7
Grade Level Range 5–9 7–11 7–11 5–14 6–17 8–15 6–11 7–13 8–12

* PEM = patient education materials

† SD = standard deviation