BRFFSBehavior Risk Factor Surveillance System (US CDC)
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These ranges resemble typical response rates for BRFFS, and we use sampling weights to correct for potential nonresponse biases.
Em 2011, ocorreram alteracoes na pesquisa BRFFS, inclusive nas questoes utilizadas para avaliar o consumo de FLV, dificultando a comparacao com os dados deste estudo (19).
In 1984, these surveys evolved into the Behavioral Risk Factor Surveillance System (BRFFS) [1].