Table 1 Basic characteristics of the study group
Study group | DCC + DCC | DCC + ECC | ECC + DCC | ECC + ECC | p | |
|---|---|---|---|---|---|---|
Mothers | ||||||
N = 169 | N = 105 | N = 12 | N = 25 | N = 27 | ||
age (years) | 30.7 (27.2–34.1) | 29.8 (26.9–33.2) | 30.3 (27.1–34.1) | 30.1 (27.2–34) | 31.1 (27.8–34.1) | 0.9 |
primiparity | 104 (61.5) | 66 (62.8) | 7 (58.3) | 15 (60) | 16 (59.3) | 0.4 |
MC | 66 (39.1) | 45 (42.9) | 4 (33.3) | 4 (16) | 13 (48.2) | 0.01 * |
DC | 103 (60.9) | 60 (57.1) | 8 (66.7) | 21 (84) | 14 (51.8) | 0.01 * |
GH/PE | 18 (10.7) | 7 (6.7) | 1 (8.3) | 5 (20) | 5 (18.5) | 0.05 |
GDM | 35 (20.7) | 16 (15.2) | 4 (33.3) | 3 (12) | 12 (44.4) | 0.01 * |
ICP | 15 (8.9) | 10 (9.5) | 1 (8.3) | 2 (8) | 2 (7.4) | 0.8 |
PPROM | 25 (14.8) | 15 (14.3) | 2 (16.7) | 5 (20) | 3 (11.1) | 0.4 |
Gestational age at delivery (weeks) | 36 (31–39) | 36 (31–38) | 35 (31–38) | 36 (31–38) | 36 (32–39) | 0.8 |
PTD | 93 (55) | 51 (48.6) | 10 (83.3) | 14 (56) | 18 (66.7) | 0.03 ** |
PTD < 34 wks | 5 (3) | 0 | 2 (16.7) | 2 (8) | 1 (3.7) | 0.2 |
vaginal delivery | 42 (24.9) | 24 (22.8) | 2 (16.7) | 10 (40) | 6 (22.2) | 0.3 |
Infants | ||||||
N = 338 | N = 210 | N = 24 | N = 50 | N = 54 | ||
MC twins | 132 (39.1) | 90 (42.9) | 8 (33.3) | 8 (16) | 13 (48.2) | 0.01 * |
DC twins | 206 (60.9) | 120 (57.1) | 16 (66.7) | 42 (84) | 28 (51.8) | 0.01 * |
birthweight 1st twin (g) | 2575 (2030–2870) | 2620 (2180–2910) | 2350 (2030–2590) | 2640 (2200–2890) | 2450 (2080–2670) | 0.1 |
birthweight 2nd twin (g) | 2510 (2000–2820) | 2610 (2170–2930) | 2200 (1980–2380) | 2420 (2010–2740) | 2360 (2060–2720) | 0.1 |
SGA 1st twin | 23 (13.6) | 12 (11.4) | 2 (16.7) | 4 (16) | 5 (18.5) | 0.3 |
SGA 2nd twin | 19 (11.2) | 9 (8.6) | 3 (25) | 2 (8) | 5 (18.5) | 0.3 |
male twin | 175 (51.8) | 109 (51.9) | 12 (50) | 26 (52) | 28 (51.9) | 0.9 |
5th minute Apgar < 8 of 1st twin | 8 (4.7) | 6 (3.6) | 0 | 0 | 2 (1.2) | 0.2 |
5th minute Apgar < 8 of 2nd twin | 14 (8.3) | 6 (3.6) | 2 (1.2) | 1 (0.6) | 1 (0.6) | 0.1 |