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Related Experiment Videos

The corrected atd angle

T J David

    Human Heredity
    |January 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    The corrected atd angle, a dermatoglyphic measure, was studied in 1,000 healthy individuals. Establishing a normal range, this method reduces errors but requires age-based subgrouping for accurate analysis.

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    Area of Science:

    • Dermatoglyphics
    • Anthropometry

    Background:

    • The atd angle is a dermatoglyphic measurement used in various studies.
    • Traditional atd angle measurements are prone to significant errors from factors like triradius deviation.

    Purpose of the Study:

    • To establish a normal range for a 'corrected' atd angle in healthy subjects.
    • To introduce a modified atd angle measurement that minimizes common sources of error.

    Main Methods:

    • Studied 1,000 healthy subjects to determine the corrected atd angle.
    • Implemented a corrected method to eliminate errors from lateral triradius deviation.
    • Utilized finger adduction during print-taking to further reduce measurement error.

    Main Results:

    • A normal range for the corrected atd angle was established in the studied population.

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  • The corrected atd angle, while improved, remains influenced by subject age.
  • The distribution of the corrected atd angle is non-normal, limiting the utility of the mean.

    • Conclusions:

    • The corrected atd angle offers an improvement over standard measurements by reducing specific errors.
    • Further research is needed to subdivide subjects into age-specific groups for more precise analysis.
    • Comparisons between groups may be best achieved using established arbitrary limits for normality.