Reliability and Convergent Validity of the Algometer for Vestibular Pain Assessment in Women with Provoked Vestibulodynia

Pain Medicine : the Official Journal of the American Academy of Pain Medicine
Marie-Pierre CyrMélanie Morin

Abstract

Women with provoked vestibulodynia (PVD) suffer pain at the entry of the vagina elicited by pressure as during vaginal penetration. To quantify vestibular pain, we developed a new instrument, an algometer. The aim of this study was to investigate the test-retest reliability of the algometer and evaluate its convergent validity for vestibular pain assessment in women with PVD. Twenty-six women with PVD participated in the study. Vestibular pain was assessed with the new algometer and the already known vulvalgesiometer during two different sessions 2 to 4 weeks apart. At each session, the pressure pain threshold (PPT) and pressure pain tolerance (PPTol) were measured twice at the 3, 6, and 9 o'clock sites of the vestibule in random order. The test-retest reliability (intra- and inter-session) of the algometer was calculated using the intraclass correlation coefficient (ICC) and standard error of measurement (SEM). Its convergent validity was evaluated by the correlation coefficients between PPTs and PPTols measured by the algometer and those measured with the vulvalgesiometer. Intra-session reliability at all three sites for PPTs and PPTols in both sessions was excellent (ICC = 0.859 to 0.988, P ≤ 0.002). Inter-session reliabilit...Continue Reading

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Citations

Mar 18, 2017·American Journal of Obstetrics and Gynecology·Annie MorinMélanie Morin
Jan 24, 2018·Pain Research and Treatment·Maria Beatrice PassavantiMaria Caterina Pace
Jul 31, 2018·Journal of Lower Genital Tract Disease·Rachael B DavenportEmma C Veysey
Jan 10, 2021·The Journal of Sexual Medicine·Ilan GruenwaldLior Lowenstein
Apr 13, 2021·Neurourology and Urodynamics·Helena FrawleyJenniffer Voelkl Guevara

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