TABLE 1

Gestational weeks in vaccinated and unvaccinated study groups, stratified by patient age

Patient age (yr)Vaccinated groupUnvaccinated groupa
No. of patients% of patients at a gestational age (wk) of:No. of patients% of patients at a gestational age (wk) of:
5–910–1920–29≥305–910–1920–29≥30
18–2040.025.050.025.030.033.30.066.7
21–258116.030.99.943.26323.831.711.233.3
26–302810.732.110.746.43330.324.29.136.4
≥30933.311.10.055.650.020.020.060.0
Total12215.629.510.744.310424.028.810.636.6
  • a χ2 = 2.898, P = 0.408.