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. 2009 Mar 27;9:22. doi: 10.1186/1471-2288-9-22

Table 1.

Variables from the original studies to be included in the IPD meta-analyses.

Topics Postmenopausal bleeding Preterm birth Tubal pathology Ovarian response in IVF
Population Postmenopausal bleeding Asymptomatic early pregnancies Subfertility Indication for IVF treatment
Threatened pre-term labour

Patient characteristics -Age -Age -Age -Age
-HRT use -Obstetric history -Fertility history -Fertility history
-BMI -BMI -PID -BMI
-Time since menopause -Multiple pregnancies -Ectopic pregnancy -Previous ART
-Diabetes -Parity -BMI -Smoking
-Hypertension -Diabetes -Pelvic surgery
-Use of anticoagulants
-Previous cancer
-Thyroid dysfunction

Diagnostic tests -TVS* -Blood pressure -CAT* -FSH*
-Hysteroscopy/curettage* -Cervical length measurement* -HSG* -AFC
-Histology of carcinoma* -Fibronectin test* -Laparoscopy* -AMH

Target condition Endometrial carcinoma* Childs condition Tubal pathology* Ovarian response Pregnancy*
Delivery prior to 32 weeks*

Overview of variables that will be requested from the original authors.

Marked variables (*) are the minimal requested variables; studies missing a substantial part of these variables will be excluded.

Abbreviations used: HRT: Hormone Replacement Therapy, TVs: Trans Vaginal Sonography, BMI: Body Mass Index, PID: Pelvic Inflammatory Disease, CAT: Chlamydia Antibody Test, HSG: Hysterosalpingography, ART: Assisted Reproductive Therapy, FSH: Follicle Stimulating Hormone, AFC: Antral Follicle Count, AMH: Anti Mullerian Hormone.