Table 3 Sociodemographic and obstetric conditions among twin and single deliveries according to the occurrence of any Adverse Perinatal Outcome (APO). WHO Multicountry Survey, 2010–2011
Perinatal outcomes | Twin deliveries n (%) | Singleton deliveries n (%) | Total | p-value* | ||
|---|---|---|---|---|---|---|
APO | No APO | APO | No APO | |||
Maternal agea | < 0.001 | |||||
< 18 | 49 (1.6) | 22 (1.4) | 3987 (4.1) | 6971 (3.4) | 11,029 | |
18–35 | 2693 (87.1) | 1296 (85.0) | 86,375 (88.3) | 179,196 (87.6) | 269,560 | |
> 35 | 349 (11.3) | 206 (13.5) | 7510 (7.7) | 18,420 (9.0) | 26,485 | |
Maternal education (years)b | < 0.001 | |||||
0–4 | 694 (24.6) | 259 (18.1) | 21,295 (23.4) | 34,647 (18.3) | 56,895 | |
5–9 | 865 (30.7) | 414 (28.9) | 29,664 (32.6) | 57,190 (30.3) | 88,133 | |
> 10 | 1263 (44.8) | 758 (53.0) | 40,025 (44.0) | 97,219 (51.4) | 139,265 | |
Parityc | < 0.001 | |||||
0 | 1121 (36.3) | 401 (26.3) | 47,293 (48.3) | 81,773 (39.9) | 130,588 | |
1–2 | 1306 (42.3) | 793 (52.1) | 37,017 (37.8) | 88,631 (43.3) | 127,747 | |
> 2 | 661 (21.4) | 329 (21.6) | 13,681 (14.0) | 34,487 (16.8) | 49,158 | |
Marital statusd | 0.013 | |||||
With no partner | 251 (8.2) | 91 (6.0) | 10,898 (11.2) | 19,766 (9.7) | 31,006 | |
With partner | 2825 (91.8) | 1422 (94.0) | 86,434 (88.8) | 183,915 (90.3) | 274,596 | |
Gestational age at deliverye | < 0.001 | |||||
< 34 weeks | 488 (15.8) | 74 (4.8) | 5966 (6.1) | 1329 (0.6) | 7857 | |
34–36 weeks | 619 (20.1) | 435 (28.5) | 5850 (6.0) | 8838 (4.3) | 15,742 | |
≥ 37 weeks | 1972 (64.0) | 1017 (66.6) | 86,010 (87.9) | 195,007 (95.0) | 284,006 | |
Onset of labourf | < 0.001 | |||||
Spontaneous | 3902 (67.2) | 1611 (62.9) | 74,825 (76.4) | 159,268 (77.7) | 239,606 | |
Induced | 455 (7.8) | 162 (6.3) | 11,572 (11.8) | 20,638 (10.1) | 32,827 | |
Elective C-section | 1446 (24.9) | 787 (30.7) | 11,561 (11.8) | 25,054 (12.2) | 38,848 | |
Mode of deliveryg | < 0.001 | |||||
Vaginal birth | 1575 (50.8) | 691 (45.3) | 70,422 (71.8) | 146,340 (71.3) | 219,028 | |
Cesarean section | 1525 (49.2) | 835 (54.7) | 27,701 (28.2) | 58,834 (28.7) | 88,895 | |
Maternal complicationsh | < 0.001 | |||||
No complications | 2606 (84.1) | 1312 (86.0) | 88,416 (90.1) | 194,250 (94.7) | 286,584 | |
PLTC | 425 (13.7) | 200 (13.1) | 8567 (8.7) | 10,365 (5.1) | 19,557 | |
MNM | 53 (1.7) | 13 (0.9) | 921 (0.9) | 507 (0.2) | 1494 | |
MD | 16 (0.5) | 1 (0.1) | 221 (0.2) | 52 (0.0) | 290 | |
Total | 5810 | 2562 | 98,128 | 205,178 | 311,678 | |
8372 | 303,306 | |||||