Table 4:
Relationship between placenta pathology and preterm delivery, size for gestational age and low birthweight.
| 1Preterm delivery | 1Size for gestational age (<10th centile) | 1Low birthweight (<2500g) | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
|
|||||||||
| Y (%) | N (%) | P | Y (%) | N (%) | P | Y (%) | N (%) | P | |
| Percentile placental weight | 0. 7 | 0. 1 | 1. 0 | ||||||
| <10th | 2 (23) | 41 (34) | 7 (58) | 36 (30) | 4 (36) | 39 (33) | |||
| >10th | 6 (67) | 80 (66) | 5 (42) | 81 (69) | 7 (64) | 79 (66) | |||
| Missing | 1 (11) | 0 (0) | 0(0) | 1(1) | 0 (0) | 1(1) | |||
|
| |||||||||
| Cord insertion | 0. 2 | 1.0 | 0. 1 | ||||||
| Central | 3 (33) | 17 (14) | 2 (17) | 18 (15) | 4 (36) | 16 (13) | |||
| Off centre | 5 (56) | 83 (69) | 8 (67) | 80 (68) | 7 (64) | 81 (68) | |||
| Marginal | 0 (0) | 16 (13) | 1 (8) | 15 (13) | 0 (0) | 16 (14) | |||
| Missing | 1 (11) | 5 (4) | 1 (8) | 5 (4) | 0 ( 0) | 6 (5) | |||
|
| |||||||||
| Meconium exposure | 1. 0 | 0.01 | 0. 7 | ||||||
| + | 1 (11) | 24 (19) | 6 (50) | 19 (16) | 1 (9) | 24 (20) | |||
| − | 8 (89) | 97 (80) | 6 (50) | 99 (84) | 10 (91) | 95 (78) | |||
|
| |||||||||
| Chorioamnionitis | |||||||||
| Maternal Inflammatory Response | 0. 4 | 0. 4 | 0. 4 | ||||||
| + | 0 (0) | 19 (16) | 3 (25) | 16 (14) | 0 | 19 (16) | |||
| − | 9 (1 00) | 102 (84) | 9 (75) | 102 (86) | 11 (100) | 100 (84) | |||
| Fetal Inflammatory Response | 0. 4 | 1. 0 | 0. 2 | ||||||
| + | 0 | 20 17) | 2 (17) | 18 (15) | 0 | 20 (17) | |||
| − | 9 (1 00) | 101 (83) | 10 ( 83) | 100 (85) | 11 (100) | 99 (83) | |||
|
| |||||||||
| Chronic Deciduitis | 1. 0 | 0.4 | 0. 4 | ||||||
| + | 1 (11) | 13 (11) | 0 | 14 (12) | 2 (18) | 12 (10) | |||
| − | 8 (89) | 108 (89) | 12 (100) | 104 (88) | 9 (82) | 107 (90) | |||
|
| |||||||||
| Decidual arteriopathy | 0.07 | 0. 5 | 0. 1 | ||||||
| + | 2 (22) | 5 (4) | 1 (8) | 6 (5) | 2 (18) | 5 (4) | |||
| − | 7 (78) | 116 (96) | 11 ( 92) | 112 (95) | 9 (82) | 114 (96) | |||
|
| |||||||||
| Maternal Vascular Malperfusion (MVM) | 0.002 | 0.09 | <0.0001 | ||||||
| + | 7 (78) | 29 (24) | 6 (50) | 30 (25) | 10 (91) | 26 (22) | |||
| − | 2 (23) | 92 (76) | 6 (50) | 88 (75) | 1 (9) | 93 (78) | |||
1
To assess potential risk factors for preterm delivery (<37 weeks gestational age), size for gestational age (<10th percentile) and low birth weight (<2500g), we compared differences between groups using the chi2 test or Fisher’s exact test.