Validity and reliability of single-item questions about physical activity.
Iwai N, Hisamichi S, Hayakawa N, Inaba Y, Nagaoka T, Sugimori H, Seki N, Sakata K, Suzuki K, Tamakoshi A, Nakamura Y, Yamamoto A, Nishino Y, Ogihara A, Okamoto N, Suzuki H, Morioka S, Ito Y, Wakai K, Ojima T, Tanaka H, Nose T, Ohno Y.
Iwai N, et al. Among authors: sakata k.
J Epidemiol. 2001 Sep;11(5):211-8. doi: 10.2188/jea.11.211.
J Epidemiol. 2001.
PMID: 11579928
Free article.