Blomquist JL, et al. - Researchers examined how pelvic floor muscle strength is associated with the incidence of pelvic floor disorders. In addition, they sought for maternal and obstetrical characteristics that modify the association. In this longitudinal study, pelvic floor disorders after childbirth were examined via recruiting participants 5–10 years after their first delivery and assessing them for pelvic floor disorders annually for up to 9 years. Outcomes revealed that the cumulative incidence of pelvic organ prolapse, stress incontinence, and overactive bladder is associated with pelvic muscle strength, after vaginal delivery, but not cesarean delivery. Amongst women with at least 1 vaginal delivery and considering only pelvic floor disorders that evolved during study investigation (5–10 years after the first delivery), and controlling for maternal characteristics (body mass index and genital hiatus), women who had a peak pressure of < 20 cm H₂O vs those with ≥ 20 cm H₂O had hazard ratios of 1.16 for stress incontinence, 1.27 for overactive bladder, and 1.43 for pelvic organ prolapse. However, after adjusting for the genital hiatus and BMI, the associations attenuate.