Table 2.
Percentages of accepting COVID-19 vaccines by prosocial priming condition across survey rounds.
| Model 1: without adjusting for vaccine confidence |
Model 2: with adjustment for vaccine confidence |
|||
|---|---|---|---|---|
| Survey round | With prosocial priming | Without prosocial priming | With prosocial priming | Without prosocial priming |
| Round 1 | 68.4 (61.3–75.4) a | 56.5 (49.8–63.2) | 66.8 (60.0–73.4)a | 57.3 (51.2–63.4) |
| Round 2 | 70.8 (64.9–76.7) | 64.0 (57.6–70.4) | 72.3 (66.8–77.8)a | 62.6 (56.7–68.5) |
| Round 3 | 65.7 (59.0–71.8) | 61.3 (54.1–67.9) | 66.2 (60.2–72.2) | 60.8 (54.2–67.4) |
| Round 4 | 61.6 (54.8–68.0)a | 52.0 (45.2–58.7) | 62.5 (56.3–68.7)a | 50.9 (44.5–57.3) |
| Round 5 | 65.3 (60.3–69.9)a | 56.7 (51.7–61.6) | 65.9 (61.5–70.2)b | 56.5 (51.9–61.1) |
| Round 6 | 59.4 (54.4–64.1) | 53.3 (48.4–58.2) | 60.2 (55.9–64.5)a | 52.6 (48.2–56.9) |
| Overall | 64.5 (62.1–66.9)c | 56.7 (54.3–59.2) | 65.1 (62.9–67.3)c | 56.2 (54.0–58.4) |
All values were percentages. The values within parentheses were the 95% confidence intervals of vaccine acceptance rates. a p-value < 0.05, b p-value < 0.01, and c p < 0.001, indicating differences by prosocial priming condition.