The MAT-sf: identifying risk for major mobility disability

W Jack Rejeski, Julia Rushing, Jack M Guralnik, Edward H Ip, Abby C King, Todd M Manini, Anthony P Marsh, Mary M McDermott, Roger A Fielding, Anne B Newman, Catrine Tudor-Locke, Thomas M Gill, LIFE Study Group, Marco Pahor, Jack M Guralnik, Christian Leeuwenburgh, Connie Caudle, Lauren Crump, Latonia Holmes, Jocelyn Lee, Ching-ju Lu, Michael E Miller, Mark A Espeland, Walter T Ambrosius, William Applegate, Daniel P Beavers, Robert P Byington, Delilah Cook, Curt D Furberg, Lea N Harvin, Leora Henkin, John Hepler, Fang-Chi Hsu, Laura Lovato, Wesley Roberson, Julia Rushing, Scott Rushing, Cynthia L Stowe, Michael P Walkup, Don Hire, W Jack Rejeski, Jeffrey A Katula, Peter H Brubaker, Shannon L Mihalko, Janine M Jennings, Evan C Hadley, Sergei Romashkan, Kushang V Patel, Denise Bonds, Mary M McDermott, Bonnie Spring, Joshua Hauser, Diana Kerwin, Kathryn Domanchuk, Rex Graff, Alvito Rego, Timothy S Church, Steven N Blair, Valerie H Myers, Ron Monce, Nathan E Britt, Melissa Nauta Harris, Ami Parks McGucken, Ruben Rodarte, Heidi K Millet, Catrine Tudor-Locke, Ben P Butitta, Sheletta G Donatto, Shannon H Cocreham, Abby C King, Cynthia M Castro, William L Haskell, Randall S Stafford, Leslie A Pruitt, Kathy Berra, Veronica Yank, Roger A Fielding, Miriam E Nelson, Sara C Folta, Edward M Phillips, Christine K Liu, Erica C McDavitt, Kieran F Reid, Dylan R Kirn, Evan P Pasha, Won S Kim, Vince E Beard, Eleni X Tsiroyannis, Cynthia Hau, Todd M Manini, Marco Pahor, Stephen D Anton, Susan Nayfield, Thomas W Buford, Michael Marsiske, Bhanuprasad D Sandesara, Jeffrey D Knaggs, Megan S Lorow, William C Marena, Irina Korytov, Holly L Morris, Margo Fitch, Floris F Singletary, Jackie Causer, Katie A Radcliff, Anne B Newman, Stephanie A Studenski, Bret H Goodpaster, Nancy W Glynn, Oscar Lopez, Neelesh K Nadkarni, Kathy Williams, Mark A Newman, George Grove, Janet T Bonk, Jennifer Rush, Piera Kost, Diane G Ives, Stephen B Kritchevsky, Anthony P Marsh, Tina E Brinkley, Jamehl S Demons, Kaycee M Sink, Kimberly Kennedy, Rachel Shertzer-Skinner, Abbie Wrights, Rose Fries, Deborah Barr, Thomas M Gill, Robert S Axtell, Susan S Kashaf, Nathalie de Rekeneire, Joanne M McGloin, Karen C Wu, Denise M Shepard, Barbara Fennelly, Lynne P Iannone, Raeleen Mautner, Theresa Sweeney Barnett, Sean N Halpin, Matthew J Brennan, Julie A Bugaj, Maria A Zenoni, Bridget M Mignosa, Jeff Williamson, Kaycee M Sink, Hugh C Hendrie, Stephen R Rapp, Joe Verghese, Nancy Woolard, Mark Espeland, Janine Jennings, Valerie K Wilson, Carl J Pepine, Mario Ariet, Eileen Handberg, Daniel Deluca, James Hill, Anita Szady, Geoffrey L Chupp, Gail M Flynn, Thomas M Gill, John L Hankinson, Carlos A Vaz Fragoso, Erik J Groessl, Robert M Kaplan, W Jack Rejeski, Julia Rushing, Jack M Guralnik, Edward H Ip, Abby C King, Todd M Manini, Anthony P Marsh, Mary M McDermott, Roger A Fielding, Anne B Newman, Catrine Tudor-Locke, Thomas M Gill, LIFE Study Group, Marco Pahor, Jack M Guralnik, Christian Leeuwenburgh, Connie Caudle, Lauren Crump, Latonia Holmes, Jocelyn Lee, Ching-ju Lu, Michael E Miller, Mark A Espeland, Walter T Ambrosius, William Applegate, Daniel P Beavers, Robert P Byington, Delilah Cook, Curt D Furberg, Lea N Harvin, Leora Henkin, John Hepler, Fang-Chi Hsu, Laura Lovato, Wesley Roberson, Julia Rushing, Scott Rushing, Cynthia L Stowe, Michael P Walkup, Don Hire, W Jack Rejeski, Jeffrey A Katula, Peter H Brubaker, Shannon L Mihalko, Janine M Jennings, Evan C Hadley, Sergei Romashkan, Kushang V Patel, Denise Bonds, Mary M McDermott, Bonnie Spring, Joshua Hauser, Diana Kerwin, Kathryn Domanchuk, Rex Graff, Alvito Rego, Timothy S Church, Steven N Blair, Valerie H Myers, Ron Monce, Nathan E Britt, Melissa Nauta Harris, Ami Parks McGucken, Ruben Rodarte, Heidi K Millet, Catrine Tudor-Locke, Ben P Butitta, Sheletta G Donatto, Shannon H Cocreham, Abby C King, Cynthia M Castro, William L Haskell, Randall S Stafford, Leslie A Pruitt, Kathy Berra, Veronica Yank, Roger A Fielding, Miriam E Nelson, Sara C Folta, Edward M Phillips, Christine K Liu, Erica C McDavitt, Kieran F Reid, Dylan R Kirn, Evan P Pasha, Won S Kim, Vince E Beard, Eleni X Tsiroyannis, Cynthia Hau, Todd M Manini, Marco Pahor, Stephen D Anton, Susan Nayfield, Thomas W Buford, Michael Marsiske, Bhanuprasad D Sandesara, Jeffrey D Knaggs, Megan S Lorow, William C Marena, Irina Korytov, Holly L Morris, Margo Fitch, Floris F Singletary, Jackie Causer, Katie A Radcliff, Anne B Newman, Stephanie A Studenski, Bret H Goodpaster, Nancy W Glynn, Oscar Lopez, Neelesh K Nadkarni, Kathy Williams, Mark A Newman, George Grove, Janet T Bonk, Jennifer Rush, Piera Kost, Diane G Ives, Stephen B Kritchevsky, Anthony P Marsh, Tina E Brinkley, Jamehl S Demons, Kaycee M Sink, Kimberly Kennedy, Rachel Shertzer-Skinner, Abbie Wrights, Rose Fries, Deborah Barr, Thomas M Gill, Robert S Axtell, Susan S Kashaf, Nathalie de Rekeneire, Joanne M McGloin, Karen C Wu, Denise M Shepard, Barbara Fennelly, Lynne P Iannone, Raeleen Mautner, Theresa Sweeney Barnett, Sean N Halpin, Matthew J Brennan, Julie A Bugaj, Maria A Zenoni, Bridget M Mignosa, Jeff Williamson, Kaycee M Sink, Hugh C Hendrie, Stephen R Rapp, Joe Verghese, Nancy Woolard, Mark Espeland, Janine Jennings, Valerie K Wilson, Carl J Pepine, Mario Ariet, Eileen Handberg, Daniel Deluca, James Hill, Anita Szady, Geoffrey L Chupp, Gail M Flynn, Thomas M Gill, John L Hankinson, Carlos A Vaz Fragoso, Erik J Groessl, Robert M Kaplan

Abstract

Background: The assessment of mobility is essential to both aging research and clinical geriatric practice. A newly developed self-report measure of mobility, the mobility assessment tool-short form (MAT-sf), uses video animations as an innovative method to improve measurement accuracy/precision. The primary aim of the current study was to evaluate whether MAT-sf scores can be used to identify risk for major mobility disability (MMD).

Methods: This article is based on data collected from the Lifestyle Interventions and Independence for Elders study and involved 1,574 older adults between the ages of 70-89. The MAT-sf was administered at baseline; MMD, operationalized as failure to complete the 400-m walk ≤ 15 minutes, was evaluated at 6-month intervals across a period of 42 months. The outcome of interest was the first occurrence of MMD or incident MMD.

Results: After controlling for age, sex, clinic site, and treatment arm, baseline MAT-sf scores were found to be effective in identifying risk for MMD (p < .0001). Partitioning the MAT-sf into four groups revealed that persons with scores <40, 40-49, 50-59, and 60+ had failure rates across 42 months of follow-up of 66%, 52%, 35%, and 22%, respectively.

Conclusions: The MAT-sf is a quick and efficient way of identifying older adults at risk for MMD. It could be used to clinically identify older adults that are in need of intervention for MMD and provides a simple means for monitoring the status of patients' mobility, an important dimension of functional health.

Keywords: Geriatric assessment; LIFE study; MAT-sf; Mobility disability; Physical function..

© The Author 2015. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

Figures

Figure 1.
Figure 1.
Mobility assessment tool-short form (MAT-sf) categories and survival without major mobility disability (MMD) by time from randomization.

Source: PubMed

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