POSEIDON Group 1 (n = 2554) | POSEIDON Group 2 (n = 971) | POSEIDON Group 3 (n = 141) | POSEIDON Group 4 (n = 142) | Control (n = 3820) | P value | |
---|---|---|---|---|---|---|
vanishing twin syndrome | 106(4.2) | 32(3.3)a | 8(5.7) | 1(0.7)abd | 187(4.9) | 0.031 |
GDM | 160(6.3) | 78(8.0)a | 9(6.4) | 20(14.1)abcd | 199(5.2) | < 0.001 |
HDP | 58(2.3) | 39(4.0)ab | 7(5.0) | 6(4.2) | 92(2.4) | 0.010 |
LBW | 78(3.3)a | 32(3.9) | 6(4.7) | 2(1.8) | 151(4.3) | 0.249 |
PTB | 94(3.7) | 37(3.8) | 6(4.3) | 6(4.2) | 146(3.8) | 0.993 |
Pregnancy loss | ||||||
Total pregnancy loss | 159(6.2)a | 126(13.0)ab | 9(6.4)c | 28(19.7)abcd | 289(7.6) | < 0.001 |
1st trimester pregnancy loss | 100(3.9)a | 108(11.1)ab | 6(4.3)c | 26(18.3)abcd | 211(5.5) | < 0.001 |
2nd trimester pregnancy loss | 59(2.3) | 18(1.9) | 3(2.1) | 2(1.4) | 78(2.0) | 0.910 |
Induction due to malformation | 15(0.6) | 16(1.6)ab | 1(0.7) | 4(2.8)ab | 28(0.7) | 0.005 |
Placenta previa | 29(1.1) | 14(1.4) | 3(2.1) | 3(2.1) | 46(1.2) | 0.473 |
Macrosomia | 227(9.6) | 97(11.7) | 16(12.4) | 14(12.6) | 353(10.1) | 0.348 |