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Pairwise comparison of transvaginal ultrasound (US) effect on the multiparametric uterine peristalsis quantifications before and during US examination. (A–D) Menses (n = 19). (E–H) Proliferative phase (n = 20). (I–L) Periovulatory phase (n = 11). (M–P) Secretory phase (n = 30). The pairwise t-paired test was performed to compare the mean value of the UP parameters for each visit in each patient. US = ultrasound. ∗P<.05, ∗∗P<.01, ∗∗∗P<.001, ∗∗∗∗P<.0001.
