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Table 2 Study population

From: Identification and characteristics of vaccine refusers

Age 2 and under Group
  HMO A HMO B
  # Eligible # Chart reviewed # Eligible # Chart reviewed
UTDa/Ever Refuse 19 15 (78.9%) 255 74 (29.0%)
UTD/Never Refuse 10,446 100 (1%) 18,335 71 (0.4%)
Not UTD/Ever Refuse 77 68 (88.3%) 202 66(32.7%)
Not UTD/Never Refuse 3,715 342 (9.2%) 6,097 104 (1.7%)
Total 14,257 525 (3.68%) 24,889 315 (1.27%)
Age 6 Group
  HMO A HMO B
UTD/Ever Refuse 8 8 (100%) 31 28 (90.3%)
UTD/Never Refuse 3,128 30 (0.96%) 7,789 63 (0.8%)
Not UTD/Ever Refuse 25 24 (96%) 34 31 (91.2%)
Not UTD/Never Refuse 1,960 153 (7.8%) 5,305 72 (1.4%)
Total 5,121 215 (4.20%) 13,159 194 (1.47%)
  1. aUTD: Up-to-date immunization status