@article{ref1,
title="36-Item Short Form Survey (SF-36) versus gait speed as predictor of preclinical mobility disability in older women: the women's health initiative",
journal="Journal of the American Geriatrics Society",
year="2018",
author="Laddu, Deepika R. and Wertheim, Betsy C. and Garcia, David O. and Woods, Nancy F. and LaMonte, Michael J. and Chen, Bertha and Anton-Culver, Hoda and Zaslavsky, Oleg and Cauley, Jane A. and Chlebowski, Rowan and Manson, JoAnn E. and Thomson, Cynthia A. and Stefanick, Marcia L.",
volume="66",
number="4",
pages="706-713",
abstract="OBJECTIVES: To compare the value of clinically measured gait speed with that of the self-reported Medical Outcomes Study 36-item Short-Form Survey Physical Function Index (SF-36 PF) in predicting future preclinical mobility disability (PCMD) in older women. <br><br>DESIGN: Prospective cohort study. SETTING: Forty clinical centers in the United States. PARTICIPANTS: Women aged 65 to 79 enrolled in the Women's Health Initiative Clinical Trials with gait speed and SF-36 assessed at baseline (1993-1998) and follow-up Years 1, 3, and 6 (N = 3,587). MEASUREMENTS: Women were categorized as nondecliners or decliners based on changes (from baseline to Year 1) in gait speed and SF-36 PF scores. Logistic regression models were used to estimate incident PCMD (gait speed <1.0 m/s) at Years 3 and 6. Area under the receiver operating characteristic curve (AUC) was used to compare the predictive value of SF-36 PF with that of measured gait speed. <br><br>RESULTS: Slower baseline gait speed and lower SF-36 PF scores were associated with higher adjusted odds of PCMD at Years 3 and 6 (all P <.001). For gait speed, decliners were 2.59 times as likely to have developed PCMD as nondecliners by Year 3 and 2.35 times as likely by Year 6. Likewise, for SF-36, decliners were 1.42 times as likely to have developed PCMD by Year 3 and 1.49 times as likely by Year 6. Baseline gait speed (AUC = 0.713) was nonsignificantly better than SF-36 (AUC = 0.705) at predicting PCMD over 6 years (P =.21); including measures at a second time point significantly improved model discrimination for predicting PCMD (all P <.001). <br><br>CONCLUSION: Gait speed identified PCMD risk in older women better than the SF-36 PF did, although the results may be limited given that gait speed served as a predictor and to define the PCMD outcome. Nonetheless, monitoring trajectories of change in mobility are better predictors of future mobility disability than single measures.<br><br>© 2018, Copyright the Authors Journal compilation © 2018, The American Geriatrics Society.<p /> <p>Language: en</p>",
language="en",
issn="0002-8614",
doi="10.1111/jgs.15273",
url="http://dx.doi.org/10.1111/jgs.15273"
}