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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
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