{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T22:12:06Z","timestamp":1777932726189,"version":"3.51.4"},"reference-count":0,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2006,6,1]],"date-time":"2006-06-01T00:00:00Z","timestamp":1149120000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rejuvenation Research"],"published-print":{"date-parts":[[2006,6]]},"abstract":"<jats:p>\n                    Several statistical information criteria and other statistical issues such as residual examinations and multi-collinearity in regression analysis were argued to establish the predictive equation of age from physical fitness measurements. These independent variables of physical fitness, body composition, two blood pressures, and bone strength were taken from 31 Japanese males (48 \u00b1 11.9 years old) living in rural areas. The following equation was selected as the optimal one according to Akaike\u2019s information criterion: \u0177 = 90.0 \u20131.294 * SITUP \u2013 0.467 * MAP \u2013 0.094 * BALANCE (\n                    <jats:italic toggle=\"yes\">R<\/jats:italic>\n                    = 0.837). When all ten variables were included in the initial equation,\n                    <jats:italic toggle=\"yes\">R<\/jats:italic>\n                    was 0.864, and the highest R* (R adjusted for d.f.) was observed at the fifth step.\n                  <\/jats:p>","DOI":"10.1089\/rej.2006.9.324","type":"journal-article","created":{"date-parts":[[2006,5,17]],"date-time":"2006-05-17T10:40:48Z","timestamp":1147862448000},"page":"324-328","source":"Crossref","is-referenced-by-count":1,"title":["Statistical Issues of Regression Analysis on Development of an Age-Predictive Equation"],"prefix":"10.1177","volume":"9","author":[{"given":"Kazutoshi","family":"Kikkawa","sequence":"first","affiliation":[{"name":"Department of Health and Physical Education, Prefectural University of Hiroshima, Showbara-City, Hiroshima, Japan."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2006,6]]},"container-title":["Rejuvenation Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/rej.2006.9.324","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1089\/rej.2006.9.324","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T01:28:15Z","timestamp":1777685295000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/full\/10.1089\/rej.2006.9.324"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2006,6]]},"references-count":0,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2006,6]]}},"alternative-id":["10.1089\/rej.2006.9.324"],"URL":"https:\/\/doi.org\/10.1089\/rej.2006.9.324","relation":{},"ISSN":["1549-1684","1557-8577"],"issn-type":[{"value":"1549-1684","type":"print"},{"value":"1557-8577","type":"electronic"}],"subject":[],"published":{"date-parts":[[2006,6]]}}}