TABLE 4

Reasons for Parents Reporting Vaccine Doubt Indicators (Unsure, Delayed, or Refused), for Specific Vaccines

Reasonsn (%)
DTaP VaccinePolio VaccineMMR VaccineHib VaccineHepatitis B VaccineVaricella VaccinePCVNot SpecificOther VaccineInfluenza Vaccine
Unsure (n = 349)
    Child was ill8 (9.9)3 (7.9)1 (0.2)2 (6.6)1 (2.9)2 (0.6)0 (0)13 (13.4)3 (16.8)2 (5.1)
    Safety/side effect25 (63.9)18 (60.5)41 (87.7)21 (82.8)14 (49.5)45 (64.1)21 (94.3)44 (75.6)5 (81.3)14 (60.3)
    Effectiveness6 (21.0)4 (31.6)4 (11.1)3 (7.4)8 (34.6)36 (35.3)2 (3.9)2 (2.1)0 (0)5 (30.7)
    Cost0 (0)0 (0)0 (0)0 (0)0 (0)0 (0)0 (0)1 (1.6)0 (0)0 (0)
    Other2 (2.9)0 (0)1 (0.3)0 (0)1 (13.0)0 (0)0 (0)4 (3.0)0 (0)0 (0)
    Do not know/refused2 (2.3)0 (0)1 (0.7)2 (3.2)0 (0)0 (0)0 (0)7 (4.3)1 (1.9)1 (3.9)
    Missed/could not get appointment0 (0)0 (0)0 (0)0 (0)0 (0)0 (0)1 (1.8)0 (0)0 (0)0 (0)
Delayed (n = 526)
    Child was ill36 (51.1)16 (43.4)32 (44.2)20 (41.0)22 (55.5)25 (28.0)17 (50.9)57 (49.1)2 (39.1)1 (25.9)
    Safety/side effect18 (21.2)10 (35.7)32 (40.8)12 (27.5)11 (22.9)32 (35.0)8 (19.3)15 (9.2)2 (26.0)2 (23.9)
    Effectiveness1 (0.5)2 (1.1)1 (0.4)2 (10.4)4 (3.9)21 (26.4)1 (0.2)5 (7.3)0 (0)1 (50.2)
    Cost7 (7.3)5 (10.4)2 (2.8)5 (8.2)4 (8.7)0 (0)4 (12.5)11 (5.5)0 (0)0 (0)
    Other6 (8.7)0 (0)0 (0)1 (3.7)0 (0)1 (0.3)1 (0.7)9 (10.6)2 (30.9)0 (0)
    Do not know/refused3 (1.0)3 (7.0)0 (0)1 (0.9)1 (1.0)1 (0.6)2 (14.8)11 (3.0)1 (4.0)0 (0)
    Missed/could not get appointment8 (10.2)3 (2.4)11 (11.8)6 (8.3)6 (8.0)10 (9.7)2 (1.6)28 (15.3)0 (0)0 (0)
Refused (n = 234)
    Child was ill8 (22.6)3 (14.4)1 (3.9)6 (9.3)1 (5.3)4 (2.4)3 (8.0)5 (8.4)1 (6.8)0 (0)
    Safety/side effect14 (67.4)11 (82.4)23 (93.9)10 (76.5)10 (62.2)37 (49.6)13 (65.5)22 (51.6)5 (69.3)7 (34.8)
    Effectiveness2 (1.1)1 (1.5)2 (1.7)2 (3.2)6 (26.9)34 (45.8)7 (25.1)4 (7.5)1 (4.7)9 (53.3)
    Cost0 (0)0 (0)0 (0)0 (0)0 (0)1 (0.9)0 (0)2 (13.6)0 (0)0 (0)
    Other2 (8.4)2 (1.7)1 (0.5)2 (11.0)2 (5.6)3 (1.3)1 (0.5)1 (0.5)1 (16.9)1 (10.5)
    Do not know/refused1 (0.5)0 (0)0 (0)0 (0)0 (0)0 (0)0 (0)6 (12.7)1 (2.3)1 (1.4)
    Missed/could not get appointment0 (0)0 (0)0 (0)0 (0)0 (0)0 (0)1 (0.9)1 (5.7)0 (0)0 (0)
  • DTaP indicates diphtheria-tetanus-acellular pertussis; MMR, measles-mumps-rubella; Hib, Haemophilus influenza type B; PCV, pneumococcal conjugate vaccine; not specific, not a specific shot.