TABLE 3

Comparison of Vaccine Doses Administered Before and During the COVID-19 Pandemic to Children 0–18 Years of Age at KPSC

AgePrepandemic Period (January 1 to March 12)Stay-at-Home Period (March 13 to May 6)Adjusted % Difference (95% CI)a (Stay-at- Home Versus Prepandemic)Reopening Period (May 7 to August 31)Adjusted % Difference (95% CI)a (Reopening Versus Prepandemic)
20202019% Difference (2020 vs 2019)20202019% Difference (2020 vs 2019)20202019% Difference (2020 vs 2019)
All vaccines
 0–23 mo168 107162 9263.294 568122 531−22.8−25.2 (−26.0 to −24.4)251 491257 063−2.2−5.2 (−6.0 to −4.4)
 2–6 y26 54325 5633.8449225 438−82.3−83.0 (−83.6 to −82.4)40 11352 478−23.6−26.4 (−28.0 to −24.8)
 7–12 y34 83533 1135.2559431 730−82.4−83.2 (−83.8 to −82.7)67 64083 313−18.8−22.8 (−24.2 to −21.4)
 13–18 y19 56418 9463.3189114 714−87.1−87.6 (−88.2 to −86.9)22  61443 192−47.6−49.3 (−50.6 to −48.0)
Measles-containing vaccines
 <24 mo901087033.544357315−39.4−41.4 (−44.2 to −38.6)13 77715 542−11.4−14.4 (−17.5 to −11.1)
 2–18 y10 23599762.6181810 672−83.0−83.4 (−84.3 to −82.4)16 45321 848−24.7−26.6 (−29.1 to −24.1)
  • a Adjusted % difference = (ratio of dose ratios − 1) × 100.