Table 1.
Demographic and clinical characteristics of women with normal pregnancies in the mid-trimester and at term, with and without spontaneous labor.
| Mid-trimester (n=30) | pa | Term not in labor (n = 31) | pb | Term in labor (n = 30) | pc | |
|---|---|---|---|---|---|---|
| Maternal age (years)† | 36 (35-38) | <0.001 | 28 (21.5-33) | <0.001 | 22 (19-26.2) | <0.001 |
| GA at amniocentesis (weeks)† | 16.2 (16-17) | <0.001 | 38.5 (37.9-39.6) | NS | 38.4 (38-39.2) | <0.001 |
| GA at delivery (weeks) | 39 (38-40) | NS | 38.5 (37.9-39.6) | NS | 38.4 (38-39.2) | NS |
| Birth weight (grams) | 3346 (3218-3671) | NS | 3200 (3015-3634) | NS | 3295 (3092-3510) | NS |
Values expressed as median (interquartile range)
GA: gestational age; NS: not significant.
a
p between mid-trimester and term not in labor
b
p between term not in labor and term in labor
c
p mid-trimester and term in labor
†
p<0.001, Kruskal-Wallis test