Survey
A method for collecting quantitative information about items in a population Opinion poll, an assessment of public opinion.
A nationwide survey confirmed sex differences in the association between various self-reported sleep disorder and cognitive decline in people aged 65 and older 1).
Online survey
1)
Chiu HY, Lai FC, Chen PY, Tsai PS. Differences Between Men and Women Aged 65
and Older in the Relationship Between Self-Reported Sleep and Cognitive
Impairment: A Nationwide Survey in Taiwan. J Am Geriatr Soc. 2016 Sep 14. doi:
10.1111/jgs.14316. [Epub ahead of print] PubMed PMID: 27627762.