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Dance Functional Outcome Survey: Development and Preliminary Analyses.

Shaw Bronner1, Igor Reis Urbano1

  • 1ADAM Center, New York, NY United States.

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Summary
This summary is machine-generated.

The Dance Functional Outcome Survey (DFOS) shows good reliability and validity for assessing dancer function in the low back and lower extremities. Further research on a revised version is recommended for clinical use.

Keywords:
balletlikert scalemodern danceorthopedic injuryquestionnaireself-reportvisual analog scale

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Area of Science:

  • Dance Science
  • Musculoskeletal Health
  • Rehabilitation Medicine

Background:

  • The Dance Functional Outcome Survey (DFOS) is a self-report measure for ballet and modern dancers.
  • Assessing functional outcomes in dancers is crucial for injury management and return to performance.
  • Existing measures may not fully capture the specific demands on the low back and lower extremities in dancers.

Purpose of the Study:

  • To determine the factor analysis and internal consistency of the 16-item DFOS.
  • To investigate the test-retest and equivalence reliability of the DFOS.
  • To assess the validity of the DFOS against established orthopedic outcome instruments.

Main Methods:

  • Exploratory factor analysis and Cronbach's alpha were used to assess internal consistency and dimensionality.
  • Test-retest reliability and equivalence were evaluated by administering the DFOS twice within 4-9 days to 80 dancers.
  • Concurrent validity was assessed by comparing DFOS scores with the Cincinnati Knee Rating System, Olerud and Molander Foot-Ankle Questionnaire, and Oswestry Disability Index.

Main Results:

  • The DFOS demonstrated single factor loading and high internal consistency (Cronbach's α).
  • High test-retest repeatability and equivalence reliability were observed (r=0.74-0.99).
  • Acceptable criterion validity was found when compared to orthopedic outcome instruments (r≥0.67).

Conclusions:

  • The DFOS exhibits favorable psychometric properties, including reliability and validity, for use in healthy and injured dancers.
  • Results support further investigation of a revised 14-item Likert-version DFOS for clinical application.
  • The DFOS can be a valuable tool for evaluating functional limitations in the low back and lower extremities of dancers.