Figure 2.

Interrupted time series graphs for pregnancy weight gain, z-score, and infant birthweight z-score showing predicted trends and the coronavirus disease 2019 (COVID-19) pandemic onset (23 March, 2020) in a Washington State cohort (1 January, 2016 to 28 December, 2020) (N = 77,411 pregnancies; N = 104,936 infants). Points (+) represent the mean outcome by study week; modeled (predicted) trend is a solid line; the counterfactual is a dashed line; the seasonal modeled effect is a solid thin line; 95% CI for modeled trends in light gray shading. Plotted trendlines are drawn based on models unadjusted by random effects.