Table 1.

Model parameters of the simulation for the population of births and causes of preterm birth and neonatal mortality

	Baseline model parameters		Parameters for pathological factors (i.e., the 4 factors that affect risk of both preterm birth and neonatal death)
	Gestation at birth, weeks, Mean (SD)	Risk (events per million)	Frequency (percent)	Gestation at birth, weeks Mean (SD)	Effect om frailty (Odds ratio, OR)	Weekly incremental increase of frailty OR
Healthy births	40 (1.64)
Baseline stillbirth risk, per week (“frailty”)		80
Baseline risk of birth, per week		4
Births with A			1.5	37 (2.4)	1.5	–
Births with B			1.5	37 (2.4)	3.0	–
Births with C			0.5	32 (3.8)	2.0	20%
Births with D			0.5	31 (3.8)	2.0	20%

Abbreviations: OR, odds ratio; SD, standard deviation