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Standardizing the 60-Second Hair Count
Carina A. Wasko, MD;
Christine L. Mackley, MD;
Leonard C. Sperling, MD;
Dave Mauger, PhD;
Jeffrey J. Miller, MD
Arch Dermatol. 2008;144(6):759-762.
Objective To define the range of normal for a standardized 60-second hair count in men without alopecia.
Design Convenience sample.
Setting Hospital-based practice.
Participants The study included 60 healthy men (age range, 20-60 years) without evidence of alopecia.
Main Outcome Measure Range of normal for a standardized 60-second hair count.
Results Among the 20- through 40-year-old men, the shedding range was 0 to 78 hairs, with a mean of 10.2 hairs. Among the 41- through 60-year-old men, the range was 0-43 hairs, with a mean of 10.3 hairs. Low intrapatient variability for hair counts was found in both age groups, indicating consistent results on consecutive days for all participants. When repeated 6 months later in both age groups, the hair counts did not change much. The hair counts were repeated and verified by a trained investigator, with results similar to those of subject hair counts.
Conclusion A properly performed 60-second hair count is a simple, practical, and reliable tool for the assessment of hair shedding.
Author Affiliations: Department of Dermatology, Baylor College of Medicine, Houston, Texas (Dr Wasko); Department of Dermatology, Uniformed Services University, Bethesda, Maryland (Dr Sperling); and Departments of Health Evaluation Sciences (Dr Mauger) and Dermatology (Dr Miller), Penn State College of Medicine, Hershey, Pennsylvania. Dr Mackley is in private practice, Hummelstown, Pennsylvania.
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