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This trial has been rated according to reported aspects of its internal validity and interpretability. To make decisions about the application of the trial to clinical practice it is necessary to obtain and read the full article.

A randomized crossover investigation of a back pain and disability prevention program: possible mechanisms of change.
C. Donaldson, L. Stanger, M. Donaldson, J. Cram and D. Skubick (1993)

Journal Title: Journal of Occupational Rehabilitation
Volume 3; Issue 2; Pages 83-94

Method: Clinical trial
Internal Validity Score: 2/8		Statistical Reporting Score: 2/2
• Random allocation: Yes		• Between-group comparisons: Yes
• Concealed allocation: No		• Point estimates and variability: Yes
• Baseline comparability: Yes
• Blind assessors: No
• Blind subjects: No
• Blind therapists: No
• Adequate follow-up: No
• Intention-to-treat analysis: No

Eligibility Criteria Specified: Yes

Rating Status: This rating has been confirmed.

Abstract Summary

Intervention:	An educational program which emphasised the symmetrical use of back muscles (Back to Balance)
Comparison:	Control group
Population:	Health care facility with high time lost injury rates. N=180.
Main outcomes:	Psychological tests, cervical and lumbar paraspinal dynamic EMG evaluations and costs, incidence, and time lost injury rate for the 1 year of the study.=
Main results:	At 1 year there was less pain and retained knowledge, and significantly improved symmetry of muscles. There was also a 72% decrease in the time lost injury rate.

This abstract summary has been prepared by the OTseeker team and may not fully represent the original abstract. It is recommended that readers obtain the original abstract or report to confirm the content.

Abstracts from Journal of Occupational Rehabilitation may be viewed via the SpringerLink website: www.springerlink.com/content/105365

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