IRR 95% CI p-value
Age (years) 0.96 0.94-0.98 <0.001
BMI (kg/m2) 1.02 1.00-1.03 0.04
AFC 1.00 0.99-1.02 0.43
AMH (pmol/l) 1.00 0.99-1.01 0.71
Oestradiol on day of trigger (per 1000 pmol/l) 1.05 1.04-1.07 <0.001
Number of follicles >12 mm on day of trigger 1.02 1.01-1.03 <0.001