Survey Methods | National Poll on Healthy Aging
We field National Poll on Healthy Aging (NPHA) surveys twice per year online and by phone to a randomly selected, stratified group of U.S. adults age 50 and older drawn from NORC’s AmeriSpeak® panel, a nationally representative probability-based panel of U.S. households. We then process the data for quality and weight the data to national Census benchmarks.| National Poll on Healthy Aging
