Ranking states' immunization coverage: an example from the National Immunization Survey.
The National Immunization Survey (NIS) provides state-level estimates of preschool immunization coverage. These coverages are frequently presented in ranked lists, and ranks are frequently over-interpreted. In this paper, we highlight the difficulty in interpreting ranked point estimates. To demonstrate the uncertainty of ranks, parametric bootstrap methods were used to derive 90 per cent confidence intervals for ranks of state vaccination coverage levels among preschool children. We graphically compared states to a reference state. If NIS data are used to rank states, one should consider presenting confidence intervals for rank and the results of comparisons of one state with another graphically.
Barker
Lawrence E
LE
Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30333, USA. lsb8@cdc.gov
Smith
Philip J
PJ
Gerzoff
Robert B
RB
Luman
Elizabeth T
ET
McCauley
Mary M
MM
Strine
Tara W
TW
D002675:Child, Preschool; D016001:Confidence Intervals; D003627:Data Interpretation, Statistical; D015721:Diphtheria-Tetanus-Pertussis Vaccine / Q000008:administration & dosage; D018073:Haemophilus Vaccines / Q000008:administration & dosage; D019538:Health Care Surveys; D006801:Humans; D007114:Immunization / Q000706:statistics & numerical data*; D017589:Immunization Programs / Q000706:statistics & numerical data*; D007223:Infant; D008458:Measles Vaccine / Q000008:administration & dosage; D023321:Poliovirus Vaccines / Q000008:administration & dosage; D014481:United States
D015721:Diphtheria-Tetanus-Pertussis Vaccine; D018073:Haemophilus Vaccines; D008458:Measles Vaccine; D023321:Poliovirus Vaccines