Consistency and sources of divergence in recommendations on screening with questionnaires for presently experienced health problems or symptoms: a comparison of recommendations from the Canadian Task Force on Preventive Health Care, UK National Screening Committee, and US Preventive Services Task Force

BACKGROUND: Recently, health screening recommendations have gone beyond screening for early-stage, asymptomatic disease to include “screening” for presently experienced health problems and symptoms using self-report questionnaires. We examined recommendations from three major national guideline orga...

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