| Control n = 10698 | Intervention n = 11088 | χ2 (df) | p | |
---|---|---|---|---|---|
Sex [n (%)] | Male | 5446 (50.9%) | 5687 (51.3%) | 0.304 (1) | 0.58 |
Female | 5252 (49.1%) | 5401 (48.7%) | Â | Â | |
Age [n (%)] | 2-year-old | 4599 (43.0%) | 4809 (43.4%) | 0.308 (1) | 0.579 |
3-year-old | 6099 (57.0%) | 6279 (56.60%) | Â | Â | |
Previous Vaccine [n (%)] | Previously had vaccine No previous vaccine | 261 (2.44%) 10437 (97.56%) | 257 (2.32%) 10831 (97.68%) | 0.298 (1) | 0.58 |