title: Reliability and Validity of 2 Self-Report Measures to Assess Sedentary Behavior in Older Adults.
abstract: BACKGROUND
  The purpose of this study was to examine the reliability and validity of 2 currently available physical activity surveys for assessing time spent in sedentary behavior (SB) in older adults.
  
  
  METHODS
  Fifty-eight adults (≥65 years) completed the Yale Physical Activity Survey for Older Adults (YPAS) and Community Health Activities Model Program for Seniors (CHAMPS) before and after a 10-day period during which they wore an ActiGraph accelerometer (ACC). Intraclass correlation coefficients (ICC) examined test-retest reliability. Overall percent agreement and a kappa statistic examined YPAS validity. Lin's concordance correlation, Pearson correlation, and Bland-Altman analysis examined CHAMPS validity.
  
  
  RESULTS
  Both surveys had moderate test-retest reliability (ICC: YPAS = 0.59 (P < .001), CHAMPS = 0.64 (P < .001)) and significantly underestimated SB time. Agreement between YPAS and ACC was low (κ = -0.0003); however, there was a linear increase (P < .01) in ACC-derived SB time across YPAS response categories. There was poor agreement between ACC-derived SB and CHAMPS (Lin's r = .005; 95% CI, -0.010 to 0.020), and no linear trend across CHAMPS quartiles (P = .53).
  
  
  CONCLUSIONS
  Neither of the surveys should be used as the sole measure of SB in a study; though the YPAS has the ability to rank individuals, providing it with some merit for use in correlational SB research.
authors.affiliation: Dept of Population Health Sciences, University of Wisconsin-Madison, Madison, WI.
authors.forename: Keith P
authors.initials: KP
authors.lastname: Gennuso
authors.forename: Charles E
authors.initials: CE
authors.lastname: Matthews
authors.forename: Lisa H
authors.initials: LH
authors.lastname: Colbert
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D005260:Female; D015577:Geriatric Assessment / Q000379:methods* / Q000706:statistics & numerical data; D006293:Health Promotion; D006801:Humans; D008297:Male; D011594:Psychometrics; D015203:Reproducibility of Results; D012111:Residence Characteristics; D057185:Sedentary Behavior; D057566:Self Report; D011795:Surveys and Questionnaires; D013995:Time
references.citation: Med Sci Sports Exerc. 2001 Jun;33(6):955-61
references.pmid: 11404661
references.citation: J Obes. 2012;2012:282303
references.pmid: 22175004
references.citation: Lancet. 2004 Jul 17-23;364(9430):257-62
references.pmid: 15262103
references.citation: Am J Prev Med. 2011 Aug;41(2):189-96
references.pmid: 21767727
references.citation: J Sports Med Phys Fitness. 2001 Dec;41(4):479-85
references.pmid: 11687767
references.citation: Am J Hypertens. 2007 Nov;20(11):1156-62
references.pmid: 17954361
references.citation: Am J Epidemiol. 2006 Apr 15;163(8):709-16
references.pmid: 16495470
references.citation: Med Sci Sports Exerc. 2013 Aug;45(8):1629-38
references.pmid: 23863547
references.citation: J Aging Phys Act. 2012 Jan;20(1):64-79
references.pmid: 22190120
references.citation: Med Sci Sports Exerc. 1993 May;25(5):628-42
references.pmid: 8492692
references.citation: Am J Prev Med. 2011 Aug;41(2):216-27
references.pmid: 21767730
references.citation: J Phys Act Health. 2012 Feb;9(2):225-36
references.pmid: 22368222
references.citation: Lancet. 1986 Feb 8;1(8476):307-10
references.pmid: 2868172
references.citation: Med Sci Sports Exerc. 2011 Aug;43(8):1575-81
references.pmid: 21681120
references.citation: Int J Environ Res Public Health. 2013 Dec 02;10(12):6645-61
references.pmid: 24317382
references.citation: J Occup Environ Med. 2011 Dec;53(12):1382-7
references.pmid: 22104979
references.citation: Diabetes Res Clin Pract. 2012 Sep;97(3):368-76
references.pmid: 22682948
references.citation: Circulation. 2010 Jan 26;121(3):384-91
references.pmid: 20065160
references.citation: Stat Methods Med Res. 1999 Jun;8(2):135-60
references.pmid: 10501650
references.citation: Int J Epidemiol. 2012 Oct;41(5):1460-71
references.pmid: 23045206
references.citation: Exerc Sport Sci Rev. 2008 Oct;36(4):173-8
references.pmid: 18815485
references.citation: Eur Heart J. 2011 Mar;32(5):590-7
references.pmid: 21224291
references.citation: J Clin Epidemiol. 1993 Feb;46(2):153-62
references.pmid: 8437031
references.citation: Diabetes. 2009 Aug;58(8):1776-9
references.pmid: 19470610
references.citation: Percept Mot Skills. 2001 Aug;93(1):163-77
references.pmid: 11693682
references.citation: Cancer Causes Control. 2008 Nov;19(9):939-53
references.pmid: 18437512
references.citation: Am J Prev Med. 2013 Feb;44(2):190-1
references.pmid: 23332338
references.citation: Med Sci Sports Exerc. 2011 May;43(5):867-76
references.pmid: 20881882
references.citation: Cancer Epidemiol Biomarkers Prev. 2006 Nov;15(11):2136-40
references.pmid: 17057024
references.citation: Am J Epidemiol. 2008 Apr 1;167(7):875-81
references.pmid: 18303006
references.citation: Am J Epidemiol. 2010 Aug 15;172(4):419-29
references.pmid: 20650954
references.citation: Med Sci Sports Exerc. 2001 Jul;33(7):1126-41
references.pmid: 11445760
references.citation: Arch Intern Med. 2001 Jun 25;161(12):1542-8
references.pmid: 11427103
references.citation: Appl Physiol Nutr Metab. 2012 Jun;37(3):540-2
references.pmid: 22540258
references.citation: Am J Prev Med. 2011 Aug;41(2):207-15
references.pmid: 21767729
references.citation: Circulation. 2013 Nov 12;128(20):2259-79
references.pmid: 24126387
references.citation: Med Sci Sports Exerc. 2011 Nov;43(11):2127-33
references.pmid: 21448077
references.citation: Med Sci Sports Exerc. 2013 Jun;45(6):1198-207
references.pmid: 23274615
references.citation: Exerc Sport Sci Rev. 2012 Jul;40(3):118-26
references.pmid: 22653275
references.citation: JAMA. 2003 Apr 9;289(14):1785-91
references.pmid: 12684356
references.citation: Int J Epidemiol. 2011 Feb;40(1):150-9
references.pmid: 20576628
references.citation: Biometrics. 1977 Mar;33(1):159-74
references.pmid: 843571
references.citation: Biometrics. 1989 Mar;45(1):255-68
references.pmid: 2720055
references.citation: Med Sci Sports Exerc. 2009 May;41(5):998-1005
references.pmid: 19346988
references.citation: Med Sci Sports Exerc. 2011 Aug;43(8):1561-7
references.pmid: 21233777