Assessment of parental BMI
As part of clinical practice at Repromed, BMI is routinely recorded before cycle initiation. Both maternal and paternal height is measured with a stadiometer (cm) and weight (kg) measured with electronic scales, assessed by a clinical nurse prior to cycle commencement. Body mass index was calculated using the formula weight/height2and categorized based on the WHO; underweight (<18.5 kg/m2); normal weight (18.5–24.9 kg/m2); overweight (25.0–29.9 kg/m2); obesity (>30.0 kg/m2), with obesity class I, 30.0–34.9 kg/m2, obesity class II, 35.0–39.9 kg/m2, and obesity class III, >40 kg/m2.