Table 1 Scale employed in the study to measure the level of evidence
From: Are the health messages in schoolbooks based on scientific evidence? A descriptive study
HIGH | MEDIUM | LOW | |
|---|---|---|---|
Canadian Task Force on Preventive Health Care | A | B | C, D, E, I |
U.S. Preventive Services Task Force | A | B | C, D, I |
Centre for Evidence-Based Medicine Oxford | A | B | C |
Scottish Intercollegiate Guidelines Network (SIGN) | A, B | C | D |
U.K. National Institute of Clinical Excellence (NICE) | A, B | C | D, BPP, IP |
U.S. Agency for Healthcare Research and Quality (AHRQ) | A | B | C |