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. 2021 Jul 28;4(7):e2118702. doi: 10.1001/jamanetworkopen.2021.18702

Figure 1. Vaccine Appointment Registrations by Email Condition.

Figure 1.

Panel A shows registrations during the first 3 days of the study (January 15, 2021, 4:55 pm, to January 18, 2021, 4:40 pm). Error bars represent asymptotic 95% CIs. Panel B shows cumulative registrations over time. Email 2 and corrected email 2 were only sent to participants in A2 and B2. The lines for A2 and B2 represent registrations made by the delayed control group after they were sent the social norms and reframing risks emails, respectively. Data collection ended on January 19, 2020, at 3:19 pm, when the provided link no longer forwarded employees to the employee registration portal.