Total Survey Error Assessment for Sociodemographic Subgroups in the 2012 U.S. National Immunization Survey

Vaccination Coverage Among Children Aged 19–35 Months — United States, 2017

“…Second, vaccination histories might be incomplete if not all providers were identified or some of those identified chose not to participate. Bias in vaccination coverage estimates has been evaluated in a sensitivity analysis accounting for these potential errors, with results indicating underestimation of actual vaccination coverage by 4 to 5 percentage points ( 9 ). …”

Vaccination Coverage Among Children Aged 19–35 Months — United States, 2016

“…Total survey error has been evaluated in a sensitivity analysis accounting for these errors. Analyses of 2012 and 2013 data revealed that NIS-Child might have underestimated true vaccination coverage in those years by ≤4 percentage points for MMR, ≤5 percentage points for ≥4 doses of DTaP, and 5 percentage points for a 6-vaccine series that excluded PCV ( 9 , 10 ). Changes in annual vaccination coverage estimates should be interpreted with caution ( 3 ), particularly when they are smaller than the survey margin of error.…”

Vaccination Coverage Among Children Aged 19–35 Months — United States, 2015

“…Finally, ascertainment of the vaccination status may be incomplete. A total survey error model, including potential underascertainment of vaccinations reported by providers, indicated that some NIS estimates might be too low by about five percentage points (9). However, a recent analysis demonstrated no evidence of substantial change in bias in NIS during the period 1995-2013 (10).…”