Scientific strength of included recommendation are: 12 of level A, 9 of level B, 26 of level C and 17 of level D. Five of the recommendations were not graded.
Af ráðleggingunum hafa 12 vísindalegan styrk A, 9 styrk B, 26 styrk C og 17 styrk D. Fimm ráðlegginganna voru ekki stigaðar.