Number of embryos transferred and plurality | Number | Mortality rate and (95% CI) /denominator | ||||
---|---|---|---|---|---|---|
 | Total births | Fetal deaths | Neonatal deaths | Fetal 1000 births | Neonatal /live births | Perinatal /1000 births |
From ≥ 20 weeks gestational age to < 7 survival days after birth | ||||||
Single embryo transfer | ||||||
Singletons | 24199 | 235 | 38 | 9.7(8.5-11.0) | 1.6(1.1-2.1) | 11.3(9.9-12.6) |
Twins | 990 | 41 | 9 | 41.4(28.7-54.1) | 9.5(3.3-15.7) | 50.5(36.5-64.5) |
All births1 | 25220 | 277 | 47 | 11.0(9.7-12.3) | 1.9(1.3-2.4) | 12.8(11.4-14.2) |
Double embryo transfer | ||||||
Singletons | 15115 | 172 | 29 | 11.4(9.7-13.1) | 1.9(1.2-2.6) | 13.3(11.5-15.1) |
Twins | 9150 | 151 | 68 | 16.5(13.9-19.1) | 7.6(5.8-9.4) | 23.9(20.8-27.1) |
All births1 | 24525 | 343 | 106 | 14.0(12.5-15.5) | 4.4(3.5-5.2) | 18.3(16.6-20.0) |
All transfers 2 | ||||||
Singletons | 39624 | 410 | 69 | 10.3(9.3-11.3) | 1.8(1.3-2.2) | 12.1(11.0-13.2) |
Twins | 10292 | 193 | 77 | 18.8(16.1-21.4) | 7.6(5.9-9.3) | 26.2(23.1-29.4) |
All births1 | 50252 | 625 | 157 | 12.4(11.5-13.4) | 3.2(2.7-3.7) | 15.6(14.5-16.7) |
From ≥ 22 weeks gestational age to < 7 survival days after birth | ||||||
Single embryo transfer | ||||||
Singletons | 24200 | 159 | 28 | 6.6(5.5-7.6) | 1.2(0.7-1.6) | 7.7(6.6-8.8) |
Twins | 990 | 28 | 6 | 28.3(17.8-38.8) | 6.2(1.2-11.2) | 34.3(22.8-45.9) |
All births1 | 25108 | 187 | 34 | 7.4(6.4-8.5) | 1.4(0.9-1.8) | 8.8(7.6-10.0) |
Double embryo transfer | ||||||
Singletons | 15046 | 118 | 17 | 7.8(6.4-9.3) | 1.1(0.6-1.7) | 9.0(7.5-10.5) |
Twins | 9075 | 95 | 50 | 10.5(8.4-12.6) | 5.6(4.0-7.1) | 16.0(13.4-18.6) |
All births1 | 24353 | 225 | 72 | 9.2(8.0-10.4) | 3.0(2.3-3.7) | 12.2(10.8-13.6) |
All transfers 2 | ||||||
Singletons | 39461 | 279 | 47 | 7.1(6.2-7.9) | 1.2(0.9-1.5) | 8.3(7.4-9.2) |
Twins | 10199 | 124 | 56 | 12.2(10.0-14.3) | 5.6(4.1-7.0) | 17.6(15.1-20.2) |
All births1 | 49981 | 416 | 110 | 8.3(7.5-9.1) | 2.2(1.8-2.6) | 10.5(9.6-11.4) |