Examining Reliability and Validity of the Jebsen-Taylor Hand Function Test Among Children With Cerebral Palsy

Area of Science:

• Pediatric Rehabilitation
• Neuroscience
• Occupational Therapy

Background:

• Manual dexterity is crucial for daily living activities in children with cerebral palsy (CP).
• The Jebsen-Taylor Hand Function Test (JTHFT) is a common tool for assessing manual dexterity, but its psychometric properties in CP populations are not well-established.
• Understanding the validity and reliability of assessment tools is essential for effective intervention planning.

Purpose of the Study:

• To evaluate the psychometric properties, specifically validity and internal consistency, of the Jebsen-Taylor Hand Function Test (JTHFT).
• To determine if the JTHFT is a suitable assessment tool for manual dexterity in children diagnosed with cerebral palsy (CP).
• To examine the correlation between JTHFT scores and the Manual Ability Classification System (MACS) in pediatric CP patients.

Main Methods:

• A cross-sectional study involving 84 children (6-18 years) with cerebral palsy (CP).
• Internal consistency was assessed using Cronbach's alpha for both dominant and nondominant hands.
• Validity was tested by correlating JTHFT scores with the Manual Ability Classification System (MACS) using Pearson's correlation coefficient.

Main Results:

• The JTHFT exhibited excellent internal consistency, with Cronbach's alpha values of .944 (nondominant hand) and .911 (dominant hand).
• A statistically significant positive linear correlation was found between JTHFT scores and MACS levels (p < .01), indicating good validity.
• High variability in writing performance (JTHFT Item 1) was noted across different MACS levels.

Conclusions:

• The Jebsen-Taylor Hand Function Test (JTHFT) is confirmed as a valid and reliable instrument for assessing manual dexterity in children with cerebral palsy (CP) aged 6-18 years.
• The findings support the use of JTHFT in clinical and research settings for evaluating hand function in this population.
• Further investigation into specific test items, like writing, may provide deeper insights into functional limitations.