In addition to GAS6 and CA-125, we used another 17 clinical and lifestyle data that were available before laparoscopy: age, BMI, menstrual phase, regularity of menstrual cycle, oral contraception in the last three months, hormone therapy in the last three months, medication in the last week, dysmenorrhoea score, pelvic, abdominal or back pain, frequency of dysmenorrhoea, intensity of dysmenorrhoea, dyspareunia (general) and dyspareunia in the last three months, dyspareunia score, sport/recreation activities in the last two days (before the operation), smoking status, and alcohol consumption. This evidence concerns the gene GAS6 and Dysmenorrhea.