Table 2.
Group | Intervention arm | Control arm | ||||
---|---|---|---|---|---|---|
| ||||||
Pre-intervention year n=43,292 | Intervention year n=49,037 | p-value for difference between years | Pre-intervention year n=38,306 | Intervention year n=38,626 | p-value for difference between years | |
Vaccinated n (%) | Vaccinated n (%) | Vaccinated n (%) | Vaccinated n (%) | |||
Overall | 19,903 (46.0) | 26,447 (53.9) | <0.001 | 17,492 (45.7) | 19,335 (50.1) | <0.001 |
Age group† | ||||||
6–23 months | 3,890 (70.2) | 4,680 (75.0) | <0.001 | 2,914 (66.3) | 3,088 (72.7) | <0.001 |
2–8 years | 9,945 (49.8) | 12,938 (57.9) | <0.001 | 9,450 (52.8) | 9,138 (56.6) | <0.001 |
9–18 years | 6,068 (34.1) | 8,829 (43.2) | <0.001 | 6,128 (34.2) | 7,109 (39.0) | <0.001 |
Race† | ||||||
Non-white | 3,334 (33.7) | 6,660 (50.9) | <0.001 | 3,046 (36.4) | 3,440 (43.1) | <0.001 |
White | 16,569 (49.6) | 19,787 (55.0) | <0.001 | 14,446 (48.3) | 15,895 (51.9) | <0.001 |
Note: Boldface indicates statistical significance.
Differences across age groups and racial groups are significant (p<0.001) in both pre-intervention and intervention years.
Numbers represent number of children, not number of doses; vaccination rates were calculated for all sites combined for each intervention arm (Intervention and Control).