F. van der Veen

STUDY QUESTION: Which couples with unexplained subfertility can expect increased chances of ongoing pregnancy with IVF compared to expectant management? SUMMARY ANSWER: For couples in which the woman is under 40 years of age, IVF is associa…

STUDY QUESTION: How well does a previously developed dynamic prediction model perform in an external, geographical validation in terms of predicting the chances of natural conception at various points in time? SUMMARY ANSWER: The dynamic pr…

STUDY QUESTION: What reproductive choices do women make after they have cryopreserved oocytes for medical reasons? SUMMARY ANSWER: Women who had cryopreserved oocytes for medical reasons and tried to become pregnant, either attempted natur…

STUDY QUESTION: Are we able to develop a model to calculate the chances of pregnancy prior to the start of the first IVF cycle as well as after one or more failed cycles? SUMMARY ANSWER: Our prediction model enables the accurate individual…

BACKGROUND: Guidelines recommend diagnostic laparoscopy in subfertile women with known co-morbidities in their medical history. Aggregated evidence underpinning these recommendations is, however, currently lacking. OBJECTIVE: The objective…

OBJECTIVE: To determine the prognostic significance of laparoscopy results for fertility outcome. STUDY DESIGN: Consecutive patients undergoing hysterosalpingography and laparoscopy for subfertility in our department between May 1985 and No…

ObjectiveTo assess the diagnostic performance of serum CA-125 measurement in the detection of endometriosis.DesignMeta-analysis.Setting and patient(s)Twenty-three studies comparing serum CA-125 levels and laparoscopically confirmed endometr…