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Published on: April 23, 2014
Psychometric evaluation of the German Day-to-Day Impact of Vaginal Aging questionnaire using data from two
Michaela Gabes1, Theresa Donhauser, Anastasia Harder2
1From the Institute of Social Medicine and Health Systems Research, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany.
Objective:
We aimed to further validate the German version of the Day-to-Day Impact of Vaginal Aging (DIVA) questionnaire.
Methods:
Data were collected in the context of two intervention studies. Forty-two women participated in clinical trial VMP-03/2018 (NCT04222647) and 79 women in clinical trial VFCrC-01/2021 (NCT05211505). Internal consistency was calculated using Cronbach α . Correlations with other outcome measures such as a subjective assessment of symptoms and dyspareunia, the Vaginal Health Index, and the Vaginal Maturation Index were calculated regarding construct validity. A priori hypotheses were formulated for construct validity. Responsiveness was assessed after 43 (±3) and after 38 (±1) days in the two clinical trials.
Results:
Strong internal consistency in all of the DIVA domains was found ( α ≥ 0.80). Regarding construct validity (at baseline and over time), many hypotheses were confirmed. Furthermore, all of the DIVA domains were able to detect changes over time ( P ≤ 0.006). Moderate to strong effect sizes were found (≥0.460). The data supported the responsiveness of the DIVA.
Conclusions:
Our findings from two independent intervention studies support internal consistency, construct validity, and responsiveness of the German version of the DIVA (domains).
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