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Scientific/Clinical Article| Volume 30, ISSUE 4, P500-506, October 2017

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Validity and reliability of the Functional Dexterity Test in children

Published:November 15, 2016DOI:https://doi.org/10.1016/j.jht.2016.08.002

      Abstract

      Study Design

      Clinical measurement study.

      Introduction

      The Functional Dexterity Test (FDT) has not been validated in children.

      Purpose of the Study

      To determine reliability and validity of the FDT in a pediatric population.

      Methods

      Intraclass Correlation Coefficients (ICCs) were used to calculate interrater and test-retest reliability in typically developing children. Pearson correlation coefficients were used to compare FDT speed with the Jebsen-Taylor Hand Function Test (JHFT) and with 2 activities of daily living tasks to establish validity in children with congenital hand differences.

      Results

      The FDT demonstrated excellent interrater (ICC, 0.99) and test-retest (ICC, 0.90) reliability. Pearson correlation coefficients exceeded 0.67 for JHFT subsets of fine dexterity and were all less than 0.66 for JHFT subsets of gross grasp. Correlations with the activities of daily living tasks were good to excellent. FDT speeds in TD children exceeded those of children with congenital hand differences (P < .001), demonstrating discriminant validity.

      Discussion

      Children with congenital hand differences are often treated early in life, making it important to reliably assess hand function of these young children to distinguish developmental change from changes due to interventions. The FDT can reliably measure functional progress over time, help clinicians monitor the efficacy of treatment, and provide families realistic feedback on their child’s progress.

      Conclusion

      The FDT is a valid and reliable instrument for the measurement of fine motor dexterity in children.

      Keywords

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      JHT Read for Credit

      Quiz: #511

      Record your answers on the Return Answer Form found on the tear-out coupon at the back of this issue or to complete online and use a credit card, go to JHTReadforCredit.com. There is only one best answer for each question.
      • #1.
        Reliability was established through this statistical method
        • a.
          ANOVAs
        • b.
          ICCs
        • c.
          Standard Deviations
        • d.
          Student T Tests
      • #2.
        Validity was determined by comparing FDT speeds with those of the
        • a.
          DASH
        • b.
          MMIT
        • c.
          Hunter-Mackin Dexterity Test
        • d.
          JHFT
      • #3.
        In the context of dexterity testing, capacity refers to the patient's
        • a.
          sum total of manual performance over a given time
        • b.
          skill level in the manipulation of small objects
        • c.
          willingness and ability to perform the given task
        • d.
          accuracy of performing dexterous activities
      • #4.
        For validation volunteer subjects
        • a.
          had undergone reconstructive surgery of a hand injury
        • b.
          had a congenital hand condition
        • c.
          were old enough to give legal consent to participate in the study
        • d.
          were receiving hand therapy at the Houston VA hospital
      • #5.
        Prior to this report the FDT had not been validated for use with children
        • a.
          true
        • b.
          false
      When submitting to the HTCC for re-certification, please batch your JHT RFC certificates in groups of 3 or more to get full credit.