Table 1. Perinatal mortality according to gestational order from 1990 to 2018.
  Singleton Twins ≥ Triplets
Livebirtha 144,637 79,755 13,562
Stillbirth 1168 1128 477
Early neonatal death 704 1058 516
Perinatal Mortalityb 12.8‰ 26.7‰ 68.2‰

(a) Early neonatal death are excluded
(b) Perinatal Mortality = (stillbirth + early neonatal death) / (livebirth + stillbirth + early neonatal death)