Table.

Monte Carlo model inputs

Variable	Base case (%)	Citation
Proportion of affected women	40.2–48.6	13,16
Proportion of affected by age group (y)		13,15, 16, 17
10–19	0.7–5.0
20–29	3.9–8.1
30–39	6.7–17.0
40–49	12.0–19.2.
Proportion of women delivering by age groupa (y)		19,20
10–19	0.9–2.6
20–29	8.3–23.8
30–39	7.6–21.8
40–49	5.3–15.2
Severe cases by age group (y)		16,17
10–19	1.6–2.5
20–29	9.3–20.8
30–39	9.3–24.8
40–49	24.8–28.3
Critical cases by age group (y)		9,17
10–19	0
20–29	2.0–4.7
30–39	2.0–4.7
40–49	3.1–7.9
Fatal cases by age group (y)		12, 13, 14,17
10–19	0
20–29	0.1–0.2
30–39	0.1–0.2
40–49	0.4–0.8

Putra et al. Forecasting COVID-19 infection in pregnancy. AJOG MFM 2020.

^aUpper bound was modified using influenza OR in pregnancy 2.87.