Article

OBJECTIVE: To validate the administration of the Life-Space Assessment (LSA) and
Physical Activity Scale for the Elderly (PASE) surveys to proxy informants, as
would be necessary when measuring long-term outcomes in acutely ill, hospitalized
older adults who are initially incapacitated but eventually return to the
community. DESIGN: Cross-sectional study. SETTING: General community.
PARTICIPANTS: Convenience sample of dyads (N=40) composed of an ambulatory older
adult and a familiar companion. INTERVENTIONS: Dyads completed the LSA and PASE
surveys on 1 occasion. Companions based their responses on the recent mobility
and physical activity of the older adult. MAIN OUTCOME MEASURES: Paired total
scores for each instrument. RESULTS: At a group level, the difference between
older adult and companion mean scores for each instrument was not significant
(P>.05). Standardized mean difference values were small (d<0.1). Paired scores
were significantly yet moderately associated: intraclass correlation
coefficient(1,1)=.84 to .88; P<.01. Difference in scores was not associated with
time spent together (P>.05) or older adult gait speed (P>.05). At an individual
level, older adults and companions agreed more closely on the LSA than on the
PASE. However, disagreement in excess of estimated measurement error occurred in
40% of the dyads for the LSA and in none of the dyads for the PASE. CONCLUSIONS:
Older adults and companions collectively provided similar responses on each
instrument. Nonetheless, varying levels of agreement within individual dyads
suggested that proxy responses should be considered carefully. Implications for
clinical research and practice research are discussed.
CI - Copyright (c) 2014 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS