The inclusion criteria appeared to be controlled studies of women with uterine fibroids undergoing myomectomy to improve outcomes relating to clinical pregnancy, spontaneous abortion, ongoing pregnancy/live birth rate, implantation rate, and pre-term delivery.
The included control groups were women with or without fibroids, some of whom had undergone treatment with in vitro fertilisation, intracytoplasmic sperm injection, or were oocyte donor recipients. The mean age of participants (where reported) ranged from 34 to 41 years, and their fibroids were classified as intramural (lesions residing within myometrium without distortion of the endometrial cavity), submucosal (lesions causing distortion of the endometrial cavity), and subserosal (those extending predominantly outside the myometrium).
The authors did not state how the papers were selected for the review, or how many reviewers performed the selection.