Format

Send to

Choose Destination
See comment in PubMed Commons below
Arch Phys Med Rehabil. 2013 May;94(5):998-1002. doi: 10.1016/j.apmr.2013.01.009. Epub 2013 Jan 18.

A quality assurance study on the accuracy of measuring physical function under current conditions for use of clinical video telehealth.

Author information

1
Rehabilitation Service, Durham Veterans Administration Medical Center, Durham, NC, USA. helen.hoenig@va.gov

Abstract

OBJECTIVE:

To determine whether conditions for use of clinical video telehealth technology might affect the accuracy of measures of physical function.

DESIGN:

Repeated measures.

SETTING:

Veterans Administration Medical Center.

PARTICIPANTS:

Three healthy adult volunteers for a sample size of n=30 independent trials for each of 3 physical function tasks.

INTERVENTIONS:

None.

MAIN OUTCOME MEASURES:

Three tasks capturing differing aspects of physical function: fine-motor coordination (number of finger taps in 30s), gross-motor coordination (number of gait deviations in 10ft [3.05m]), and clinical spatial relations (identifying the proper height for a cane randomly preset ±0-2in [5.1cm] from optimal), with performance simultaneously assessed in person and video recorded. Interrater reliability and criterion validity were determined for the measurement of these 3 tasks scored according to 5 methods: (1) in person (community standard), (2) slow motion review of the video recording (criterion standard), and (3-5) full speed review at 3 Internet bandwidths (64kps, 384kps, and 768kps).

RESULTS:

Fine-motor coordination-Interrater reliability was variable (r=.43-.81) and criterion validity was poor at 64kps and 384kps, but both were acceptable at 768kps (reliability r=.74, validity β=.81). Gross-motor coordination-Interreliability was variable (range r=.53-.75) and criterion validity was poor at all bandwidths (β=.28-.47). Motionless spatial relations-Excellent reliability (r=.92-.97) and good criterion validity (β=.84-.89) at all the tested bandwidths.

CONCLUSIONS:

Internet bandwidth had differing effects on measurement validity and reliability for the fine-motor task, the gross-motor task, and spatial relations, with results for some tasks at some transmission speeds well below acceptable quality standards and community standards.

PMID:
23337425
DOI:
10.1016/j.apmr.2013.01.009
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center