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The Development of the Foot and Ankle Ability Measure

Martin, RobRoy Lee (2003) The Development of the Foot and Ankle Ability Measure. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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PDF (Figure 2.1: Summary of Specific Measures of HRQL for the Foot and Ankle)
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PDF (Table 4.1 - 4.20 / Table 5.1 / Table A1 - A7 )
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The purpose of this project was to develop the Foot and Ankle Ability Measure (FAAM), a self-reported HRQL instrument specific to those with lower leg musculoskeletal disorders. The FAAM consists of the ADL and Sports subscales. Data analysis was done in two stages. Stage I consisted of item selection based on factor loading patterns, inter-item correlations, item to total score correlations, item characteristic curves and the test information functions. 914 subjects participated in the analyses for stage I. Stage II consisted of reliability and validity testing. The data analysis plan consisted of assessing internal consistency, test re-test reliability, responsiveness to change in status, responsiveness compared to general measures of function and validity based on the correlation to concurrent measures of physical and mental functioning. There were 164 subjects in a group expected to change and 79 subjects in a group expected to remain stable. Based on the analyses in state I, 4 items were omitted from the ADL subscale. These items were related to pain and sleeping. All items on the Sports subscale were retained. Based on the analyses in stage II, the errors associated with measurement at a single point of time were +/-6.9 and +/-10 points for the ADL and Sports subscales respectively. ICC for test re-test reliability were 0.89 and 0.87 for the ADL and Sports subscales respectively. The minimal detectable change was +/-5.7 and +/-12.3 points for the ADL and Sports subscales respectively. Two-way repeated measures ANOVA and ROC analysis found both the ADL and Sports subscales were responsive to changes in status. The minimal clinically important differences were 8 and 9 points for the ADL and Sports subscales respectively. Guyatt's Responsiveness Index and ROC analysis found the ADL subscale was more responsive than general measures of function while the Sports subscale was not. The ADL and Sport subscales had high correlations to SF-36 physical function subscale, physical component summary score and global rating of function and low correlations with the SF-36 mental function subscale and mental component summary score. This study provides evidence of reliability, responsiveness and validity for the FAAM ADL and Sports subscales.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Martin, RobRoy
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairIrrgang, James Jirrgangjj@upmc.ed
Committee MemberVanSwearingen, Jessie Mjessievs@pitt.eduJESSIEVS
Committee MemberBurdett, Ray Grgb@pitt.eduRGB
Committee MemberConti, Stephen
Date: 30 July 2003
Date Type: Completion
Defense Date: 22 May 2003
Approval Date: 30 July 2003
Submission Date: 23 July 2003
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: School of Health and Rehabilitation Sciences > Rehabilitation Science
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: outcome; survey; index; evaluate; health related quality of life instrument
Other ID:, etd-07232003-072912
Date Deposited: 10 Nov 2011 19:53
Last Modified: 15 Nov 2016 13:46


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