Assessing manual dexterity: Comparing the WorkAbility Rate of Manipulation Test with the Minnesota Manual Dexterity...

Area of Science:

• Occupational therapy
• Rehabilitation science
• Human factors engineering

Background:

• The WorkAbility Rate of Manipulation Test (WRMT) is an adaptation of the Minnesota Manual Dexterity Test (MMDT).
• WRMT features a revised board and protocols to enhance its utility for therapy and fitness assessments.
• This study focuses on the development and psychometric properties of the WRMT.

Purpose of the Study:

• To detail the development process of the WRMT.
• To evaluate the preliminary psychometric characteristics of the WRMT.
• To assess the usability and user experience of the WRMT compared to the MMDT.

Main Methods:

• A cross-sectional study involving 66 healthy participants.
• Participants completed both the MMDT and WRMT in a randomized order.
• Data analysis included repeated-measures ANOVA, test-retest reliability (ICC), and Bland-Altman analysis for agreement.

Main Results:

• WRMT demonstrated good test-retest reliability for placing (ICC=0.88-0.90) and turning tests (ICC=0.68-0.82).
• Significant differences in score distributions were observed between WRMT and MMDT (P < .001).
• Participants preferred WRMT's instructions and board design, finding it easier to follow.

Conclusions:

• The WRMT is a reliable tool with favorable user feedback.
• Significant differences exist between WRMT and MMDT scores due to protocol variations.
• Direct score comparison between WRMT and MMDT should be approached with caution.