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Random-effects regression analysis for proportion of protected children
| Model | Parameter | Odds ratio | 95% CI | P value |
|---|---|---|---|---|
| 1 | Time (yr) since vaccination | 0.77 | 0.70 to 0.85 | <0.0001 |
| 2 | Time (yr) since vaccination | 0.77 | 0.69 to 0.85 | <0.0001 |
| Age (yr) at vaccination | 0.62 | 0.27 to 1.44 | 0.27 |
