Validity, cut-points, and minimally important differences for two hot flash-related daily interference scales

Menopause : the Journal of the North American Menopause Society
Janet S CarpenterKatherine A Guthrie

Abstract

To conduct psychometric analyses to condense the Hot Flash-Related Daily Interference Scale (HFRDIS) into a shorter form termed the Hot Flash Interference (HFI) scale; evaluate cut-points for both scales; and establish minimally important differences (MIDs) for both scales. We analyzed baseline and postrandomization patient-reported data pooled across three randomized trials aimed at reducing vasomotor symptoms (VMS) in 899 midlife women. Trials were conducted across five MsFLASH clinical sites between July 2009 and October 2012. We eliminated HFRDIS items based on experts' content validity ratings and confirmatory factor analysis, and evaluated cut-points and established MIDs by mapping HFRDIS and HFI to other measures. The three-item HFI (interference with sleep, mood, and concentration) demonstrated strong internal consistency (alphas of 0.830 and 0.856), showed good fit to the unidimensional "hot flash interference factor," and strong convergent validity with HFRDIS scores, diary VMS, and menopausal quality of life. For both scales, cut-points of mild (0-3.9), moderate (4-6.9), and severe (7-10) interference were associated with increasing diary VMS ratings, sleep, and anxiety. The average MID was 1.66 for the HFRDIS and 2....Continue Reading

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Citations

Jun 24, 2017·Menopause : the Journal of the North American Menopause Society·Claire Hardy
Jun 23, 2018·Menopause : the Journal of the North American Menopause Society·Nancy Fugate Woods, Wulf Utian
Mar 25, 2019·Climacteric : the Journal of the International Menopause Society·M S HunterD Fenlon
Oct 18, 2019·BJOG : an International Journal of Obstetrics and Gynaecology·S IliodromitiM Hickey
Jul 8, 2021·Archives of Gynecology and Obstetrics·Marina SourouniPetra Stute

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