| |
Participants
| |
|---|
|
LD
|
SPTB
|
Control
| |
|---|
|
Variable
|
n = 83
|
n = 144
|
n = 90
|
P-value
|
|---|
|
Maternal age, years
|
34.2 (5.8)
|
31.9 (6.2)
|
31.4 (6.1)
|
< 0.01a
|
|
Maternal age category, %
|
|
< 30 years
|
24.1
|
34.7
|
38.9
|
< 0.05b
|
|
30–39 years
|
54.2
|
56.9
|
52.2
|
|
> 40 years
|
21.7
|
8.3
|
8.9
|
|
Maternal height, cm
|
157 (6.0)
|
158 (5.9)
|
158 (5.8)
|
0.343a
|
|
Primiparous, %
|
91.6
|
47.2
|
58.9
|
< 0.01b
|
|
Cesarean section, %
|
83.1
|
64.6
|
66.7
|
< 0.05b
|
|
Gestational age at delivery, weeks
|
39.6 (1.2)
|
30.7 (5.1)
|
35.9 (3.4)
|
< 0.01a
|
|
Birth weight at delivery, g
|
3143 (398)
|
1637 (836)
|
2160 (770)
|
< 0.01a
|
- Results are expressed as mean (standard deviation) unless specified otherwise
- LD labor dystocia, SPTB spontaneous preterm birth
- aP-value: one-way analysis of variance
- bP-value: chi-squared test
