Tables 1. Baseline information on study population consisting of 500 term deliveries complicated by chorioamnionitis
Number (%)
Maternal age at delivery
Mean ± SD 31.5 ± 5.2
< 25 years of age 56 (11.2)
– 30 years of age
138 (27.6)
31-35 years of age 177 (35.4)
> 35 years of age 129 (25.8)
Parity
0 396 (79.2)
1 82 (16.4)
≥ 2 22 (4.4)
BMI, kg/m2
Underweight (<18.5) 9 (1.8)
Normal (18.5-24.9) 243 (48.6)
Overweight (25.0-29.9) 149 (29.8)
Obese (≥30.0) 72 (14.4)
Missing 27 (5.4)
Educational level*
< 9 years of schooling 7 (1.4)
9-12 years of schooling 156 (31.2)
>12 years of schooling 254 (50.8)
Missing or not specified 83 (16.6)
Smoking early pregnancy
Yes 15 (3.0)
No 467 (93.4)
Missing 18 (3.6)
Pre-pregnancy comorbidities†
Diabetes mellitus 5 (1.0)
Essential hypertension 1 (0.2)
Recurrent UTI 66 (13.2)
Pregnancy complications‡
Gestational diabetes 28 (5.6)
Pregnancy-induced hypertensive disorders 49 (9.8)
UTI 12 (2.4)
PROM 8 (1.6)
SD, Standard deviation; BMI, Body Mass Index; UTI, Urinary Tract Infection; C/D, Cesarean delivery; PROM, Premature rupture of membrane *Based on self-reported data from the Swedish Pregnancy Register †Based on self-reported information registered in the Swedish Pregnancy Register. Data on diabetes mellitus and recurrent UTI missing on 14 individuals and data on hypertension missing on 16 individuals. ‡Based on registered ICD-10 diagnostic code in the Swedish Pregnancy Register SD, Standard deviation; BMI, Body Mass Index; UTI, Urinary Tract Infection; C/D, Cesarean delivery; PROM, Premature rupture of membrane *Based on self-reported data from the Swedish Pregnancy Register †Based on self-reported information registered in the Swedish Pregnancy Register. Data on diabetes mellitus and recurrent UTI missing on 14 individuals and data on hypertension missing on 16 individuals. ‡Based on registered ICD-10 diagnostic code in the Swedish Pregnancy Register