Histological Chorioamnionitis Is Increased at Extremes of Gestation in Stillbirth: A Population-Based Study
Table 1
Demographic details of stillborn cohort.
Variable
n = number
Percentage (n/N)
*Maternal age group (year s)
< 20
44
4.9
20–24
143
15.9
25–29
246
27.3
30–34
275
30.5
35–39
148
16.4
≥40
45
4.8
*Primigravid
Yes
423
46.9
No
478
53.1
*Preexisting diabetes
Yes
16
1.8
No
885
98.2
*Gestational diabetes
Yes
27
3
No
874
97
Chronic hypertension
Yes
29
3
No
923
97
Preeclampsia
Yes
59
6.2
No
893
93.8
Labour onset
Spontaneous
303
31.8
Induced
534
56.1
No labour
105
11
Not stated
10
1.1
Delivery type
Vaginal
577
60.6
Forceps
16
1.7
Ventouse
15
1.6
Vaginal breech
181
19
Caesarean
151
15.9
Other
8
0.8
Not stated
4
0.4
Antepartum stillbirth
Yes
864
90.8
No
88
9.2
Baby gender
Male
465
48.8
Female
476
50
Indeterminate
4
0.4
Not stated
7
0.7
Unexplained stillbirth
Yes
469
49.3
No
483
50.7
Spontaneous onset of labour
Yes
303
31.8
No
649
68.2
Weight < 10th Percentile**
Yes
217
22.8
No
735
77.2
Post mortem performed
Yes
393
41.3
No
559
58.7
Gestational age (weeks)
20–24
228
24
25–29
178
18.7
30–36
259
27.2
≥37
287
30.1
*Data for these variables collected from MDC available on 901/952 stillborn babies.
**Calculated using Australian National Birth weight Percentiles [31].
