Recategorisation of body mass index to achieve andrological predictive power: a study in more than 20 000 patients

RAMÍREZ, NICOLÁS; MOLINA, ROSA INÉS; TISSERA, ANDREA; LUQUE, EUGENIA MERCEDES; TORRES PJ; BIANCONI, SANTIAGO; BELTRAMONE F; SAD-LARCHER JOSÉ; ESTOFÁN G; MANGEAUD A; MARTINI, ANA CAROLINA

REPRODUCTION FERTILITY AND DEVELOPMENT

CSIRO PUBLISHING

Año: 2020 vol. 32

1031-3613

he aim of this study was to recategorise body mass index (BMI) in order to classify patients according to their risk of semen abnormalities. Patients (n = 20 563) presenting at an andrology laboratory were classified into five groups according to BMI: underweight (BMI 40 kg m−2). Semen quality was evaluated to determine: (1) differences between groups using analysis of variance (ANOVA); (2) the chances of semen abnormalities (using generalised linear models, Chi-squared tests and odds ratios); (3) reference BMI values with andrological predictive power (multivariate conglomerate analyses and multivariate analysis of variance (MANOVA)); and (4) expected values of abnormalities for each new group resulting from BMI recategorisation. Morbidly obese and underweight patients exhibi