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Table 1 "Age 2 and under" and "Age 6" eligibility and up-to-date status criteria

From: Identification and characteristics of vaccine refusers

Age 2 and under Group
Age by 12/31/01 Enrollment criteriaa Up-to-date status evaluated at Up-to-date status criteriab
>= 24 months old Birth to 15 months of age At age 2 4 DtaP, 3 IPV, 1 MMR, 3 Hib, 3 HBV
>= 18 and < 24 months Birth to 15 months of age at 12/31/2001 4 DtaP, 3 IPV, 1 MMR, 3 Hib, 3 HBV
>= 15 and < 18 months Birth to 15 months of age at 12/31/2001 3 DtaP, 2 IPV, 1 MMR, 3 Hib, 2 HBV
>= 6 and < 15 months Birth to 12/31/2001 at 12/31/2001 3 DtaP, 2 IPV, 2 Hib, 2 HBV
>= 4 and < 6 months Birth to 12/31/2001 at 12/31/2001 2 DtaP, 2 IPV, 2 Hib, 2 HBV
< 4 months Not eligible for "age 2 and under" sub-study
Age 6 Group
Age by 12/31/01 Enrollment criteria a Up-to-date status evaluated at Up-to-date status criteria b
>= 6 years old Enrolled at age 6 At age 6 5 DtaP/DTP, 4 IPV/OPV, 2 MMR, 3 Hib, 3 HBV
< 6 years old Not eligible for "age 6" sub-study
  1. aAllows 32 days gaps at the beginning, at the end and in-between.
  2. bDtaP: Diphtheria, tetanus, and pertussis vaccine; IPV: Inactivated Polio Vaccine; MMR: Measles, Mumps & Rubella Vaccine;
  3. Hib: Haemophilus influenzae type b; HBV: Hepatitis B Virus