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Instead of using four individual items to measure HRQOL, it is feasible to study overall HRQOL via factor analysis with one underlying construct. The resulting summary score of HRQOL may be used for health evaluation, subgroup comparison, trend monitoring, and risk factor identification.
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Shaoman Yin
Rashid Njai
Lawrence Barker
Population Health Metrics
Centers for Disease Control and Prevention
North Carolina School of Science and Mathematics
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Yin et al. (Mon,) studied this question.
www.synapsesocial.com/papers/69d6c0ee1a315865a9ab32c7 — DOI: https://doi.org/10.1186/s12963-016-0091-3