Figure 1. Mean symptom scores and observed cough counts over time (N=84 experimental and N=146 natural observations). Bars represent standard error around the mean.
Figure 2. Aerosol shedding over time. Includes all observations (N=84 experimental and N=146 natural). Detectable aerosol shedding in log10 aerosol copies, with boxes showing the interquartile range (IQR) with a band to indicate the median, and whiskers extending to the highest and lowest data points within 1.5 IQR.
Figure 3. Comparison of self-reported symptoms and observed coughs from maximum fine aerosol shedding days (N=11 experimental (blue), N=71 natural (red) observations). Cough counts with boxes showing the inner-quartile range (IQR) with a band to indicate the median, and whiskers extending to the highest and lowest data points within 1.5 IQR.
Figure 4. Balance diagnostics for propensity score adjustment by average treatment effect, where the naturally infected cases are “treatment.” (A ) Absolute standardized differences between experimental and naturally infected case covariates plotted for each covariate, the propensity score (PS) and the linear PS. The dotted line represents 10%, which balanced groups do not generally exceed. (B ) Variance ratios. Dotted lines represent 0.5 and 2, the range for which balanced populations generally do not exceed.