Table 4. Late gestation stillbirth risk attributable to potentially modifiable risk factors in this study population.

Potentially modifiable risk factor	Prevalence in controls	Attributable risk
SGA	12.8%	24.7%
Maternal obesity (BMI ≥ 30)	23.7%	20.4%
Maternal overweight (BMI 25–29.9)	25.3%	8.4%
Supine going-to-sleep position last night	3.9%	9.4%
Maternal age ≥ 40 years	3.5%	5.4%

SGA: small for gestational age = birthweight <10^th customised centile