Evaluating Response Mechanisms in a Life-Space Mobility Instrument with a 'Stem and Leaf' Format
1Carlos Siordia, Department of Epidemiology, 130 North Bellefield Ave, University of Pittsburgh, Pittsburgh, PA 15213. Phone: + 1 (412) 383-1708.
Background:
Life-space mobility scales in the very old (aged 80+) have begun to be used as a way of gauging their enacted mobility.
Objectives:
To investigate if there is evidence that response patterns are being affected by the "stem and leaf" format of a life-space mobility instrument.
Methods:
Descriptive statistics, readability ease scoring, ten ordinary least square regression on a total of 698 females and 376 males from Wave-7 collected during 2010-2011 for the Hispanic Established Population for the Epidemiological Study of the Elderly.
Results:
Response patterns seem to indicate that the stem and leaf format of the life-space mobility instrument is not creating item non-response, illogical responses, or 'no' responses.
Conclusions:
Because self-reports are so frequently used, more research is needed to ascertain how instrument formats affect response mechanisms.
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