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].

Infectious Diseases in Obstetrics and Gynecology

Histological Chorioamnionitis Is Increased at Extremes of Gestation in Stillbirth: A Population-Based Study

Table 1