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FURTHER VALIDATION OF THE WRINKLING AND SAGGING MODULE: PSYCHOMETRIC PROPERTIES AND CLINICAL VALIDITY
Linda Abetz, Mapi Values, Bollington, Macclesfield, Cheshire, UK; Marci Clark, Outcomes Research, Pfizer, Ann Arbor, MI,
USA Menopausal women are often bothered by changes in their skin due to the aging process, yet few measures are available to assess the signs of skin aging in women. This study assessed the psychometric properties of the Wrinkling Sagging Module ( WSM),a 23-item patient reported questionnaire examining facial skin wrinkling and sagging. One hundred and twenty-one women, ages 45-74, were evaluated by two or more dermatologists (once and again 10-21 days later) using the Photonumeric Scoring Manual (PSM). The WSM and Skin Assessment Module (SAM) (54 items assessing aging symptoms, quality of life, ultra-violet exposure, and perceived changes in skin aging symptoms)w ere administered to the women at baseline. The WSM's summary scales' reliability and construct concurrent ( with SAM), and clinical validity ( with P SM) were assessed. The Wrinkling Summary and Sagging Summary scales met the tests of item-convergent and item discriminant validity and internal consistency reliability ( Cron-bach's Cron-bach's a: 0.95; 0.91, respectively). Correlations between WSM Wrinkling Summary and Sagging Summary scales and the SAM facial skin quality item, the SAM facial aging scale, and the SAM concern about aging scale were moderate (>0.40) indicating the WSM summary scales' concurrent validity. Significant differences (p < 0.0001) in Wrinkling Summary and Sagging Summary scale scores were ob-served by patient reports of skin quality groups using SAM Item 1 (i.e. excellent, very good, good, fair and poor), indicating the known groups’ validity o f the WSM. The WSM Wrinkling Summary and Sagging Summary scales were also able to discriminate between clinician's ratings of wrinkling and sagging using the PSM (F= 10.62, p < 0.0001), suggesting that as clinician reports of wrinkling or sagging severity increased, patients reports of wrinkling or sagging severity also increased, indicating clinical validity. Meaningful differences on the WSM summary scales will be discussed. These data confirm the psychometric integrity and clinical validity of the WSM. Further research in a longitudinal study is necessary to adequately assess the WSM's sensitivity t o change over time.
# 1512/Further Validation of the Wrinkling and Sagging Module: Psychometric Properties
and Clinical ValidityAuthor(s): Linda Abetz, Mapi Values, Marci ClarkReviewed work(s):Source: Quality of Life Research, Vol. 12, No. 7, Abstracts: 10th Annual Conference of theInternational Society for Quality of Life Research (ISOQOL) (Nov., 2003), p. 848Published by: SpringerStable URL: http://www.forestpure.com