Table III.

Distribution of birth outcomes per ongoing clinical pregnancy.

	Live birth n = 31 811 n (%)	Stillbirth n = 335 n (%)
Singleton ongoing clinical pregnancy	27 670 (87.0)	285 (85.1)
Multiple pregnancy	4141 (13.0)	50 (14.9)
Twin	4001 (12.6)	49 (14.6)
Triplet or higher order	140 (0.4)	S

Ongoing clinical pregnancy: clinical intrauterine, heterotopic or ectopic pregnancy with ≥ 1 fetal heart beat on ultrasound. Multiple pregnancy: ongoing clinical pregnancy with > 1 fetal heart beat on ultrasound. Live birth: at least one live birth if multiple pregnancy S: frequency and percentage suppressed due to cell count less than six.