Labor induction is frequently used in contemporary obstetrics practice and its rates have continued to increase. 1 Recent studies have led to modifications of paradigms for labor induction. Indeed, labor induction at 39 weeks of pregnancy in low-risk nulliparous women results in decreased cesarean rates without increasing adverse perinatal outcomes. 2,3 However, predicting successful labor induction, which is defined as vaginal delivery, is still a challenge, especially in women with an unfavorable cervix. 4,5 Different scoring systems have been proposed to address this problem. The reference standard, the Bishop score, is based on five