Fig. 1
From: Multi-site observational maternal and infant COVID-19 vaccine study (MOMI-vax): a study protocol
Sample Size Calculation based on Width of 95% Confidence Intervals for Neutralizing Antibodies for COVID-19 Vaccines included in MOMI-Vax. Legend: The curve shows neutralizing antibody from Phase 1 studies and demonstrates the inflection point for sample size at approximately 150 individuals per group, with little gain in precision with higher samples sizes. Results similar using binding antibody data (results not shown)