Table 1.
Demographic and clinical characteristics of the study population
| Without intra- amniotic inflammation or infection (n=16) |
With MIAC but without intra-amniotic inflammation (n=5) |
Sterile intra- amniotic inflammation (n=15) |
Intra-amniotic infection (n=40) |
p- value |
|
|---|---|---|---|---|---|
| Maternal age (years)a | 21 (18-25) | 25 (21-28) | 23 (20-26) | 22 (19-26) | 0.4 |
| Body mass index (kg/m2)a | 29.8 (26-39.3) | 36.4 (23.8-41.7) | 26.1 (22.8-33.7) | 26.3 (23.3-32.8) | 0.4 |
| Ethnicityb | 0.3 | ||||
| African-American | 50 (8/16) | 60 (3/5) | 13.3 (2/15) | 50 (20/40) | |
| Hispanic | 37.5 (6/16) | 40 (2/5) | 66.7 (10/15) | 40 (16/40) | |
| Caucasian | 6.3 (1/16) | 0 (0/0) | 13.3 (2/15) | 5 (2/40) | |
| Asian | 0 (0/0) | 0 (0/0) | 0 (0/0) | 2.5 (1/40) | |
| Other | 6.3 (1/16) | 0 (0/0) | 6.7 (1/15) | 2.5 (1/40) | |
| Gestational age at amniocentesis (weeks)a | 38.8 (38.2-39.5) | 40.4 (40.1-40.6) | 39.4 (38.7-39.8) | 39.9 (38.8-40.6) | 0.01 |
| Delivery routeb | 0.7 | ||||
| Vaginal | 68.8 (11/16) | 60 (3/5) | 60 (9/15) | 72.5 (29/40) | |
| Cesarean section | 31.2 (5/16) | 40 (2/5) | 40 (6/15) | 27.5 (11/40) | |
| Gestational age at delivery (weeks)a | 38.9 (38.3-39.8) | 40.6 (40.1-40.6) | 39.6 (38.8-39.9) | 39.9 (38.9-40.6) | 0.05 |
| Birth weighta (grams) | 3487.5 (3071.3-3687.5) | 3610 (3135-3815) | 3545 (3230-3790) | 3440 (3145-3670) | 0.8 |
Data are given as median (interquartile range) and percentage (number/Number)
a
Kruskal-Wallis test.
b
Fisher’s exact test.
MIAC, microbial invasion of the amniotic cavity.