Figure 2.

Forest plot visualization of the magnitude with confidence intervals showing the effect of each variable on Sab titers. Estimates to the left of the zero line indicate decreasing effects on titer levels and to the right show increasing effects. Variable definitions and limits are articulated in Table 2. Table 3 shows numeric values. Significantly increased effects are observed subsequent to SARS-CoV-2 boosters, SARS-CoV-2 infections, and influenza vaccination. Significantly decreased effects are observed after chemotherapy and steroid use.