“…No UCP occurrence was recorded in 77, 83, 94, and 412 cases using 30‐mL Foley catheters, in 1083 cases using 50‐mL Foley catheters, or in 98 cases using 60‐mL Foley catheters; however, because data on the risk of UCP in women undergoing spontaneous labor at or near term with cephalic presentation is limited, available studies concerning the usefulness of TCBC for IOL may be too small to draw conclusions about the risk of UCP, which may be inherent in the use of TCBC. Most previous studies dealing with UCP included women with IOL, preterm birth, breech presentation, and/or multifetal pregnancies, and reported varying incidences of UCP, ranging from 1.4 to 3.8 per 1000 women, and consistently indicated that IOL, breech presentation, preterm birth, and/or multifetal pregnancies are risk factors for UCP . Therefore, the risk of UCP in women undergoing spontaneous labor at or near term with cephalic presentation may be somewhat lower than the reported incidence of 1.4–3.8 per 1000.…”