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Table 1 National Birth Defects Prevention Network (NBDPN) levels of data quality performance measures for completeness, timeliness, and accuracy

From: Development and implementation of the first national data quality standards for population-based birth defects surveillance programs in the United States

NBDPN Data Quality (DQ) Performance Measures Level 1 Level 2 Level 3
Completeness DQ1.1 Types of data sources used systematically and routinely to identify potential cases at a population-based level Each of the following sources: The data sources in level 1 and any additional sources of natal or postnatal data The data sources in levels 1 and 2, as well as routine reporting from any of the following data sources b for systematic specialized ascertainment of prenatally diagnosed defects.
• Vital record data
• Additional source for case identification
DQ1.2 Birth defects included using standard NBDPN case definitions a All of the NBDPN “core” birth defects All of the NBDPN “recommended” birth defects Major structural malformations beyond those birth defects identified on the NBDPN list
DQ1.3 Pregnancy outcomes included Live births Live births, stillbirths Live births, stillbirths, and other pregnancy loss
DQ1.4 Systematic and routine identification of cases (age of diagnosis) during ascertainment period Identification of cases diagnosed through 1 month of age Identification of cases diagnosed through 1 year of age Identification of cases diagnosed beyond 1 year of age
DQ1.5 Data elements collected a All “core” data elements All “recommended” data elements All “enhanced” data elements
Timeliness DQ2.1 Time of case data completion for NBDPN “core” list ≥75 % of all “core” NBDPN birth defects - reported cases complete within 2 years of delivery. ≥95 % of all “core” NBDPN birth defects - reported cases complete within 2 years of delivery. ≥99 % of all “core” NBDPN birth defects - reported cases complete within 2 years of delivery.
DQ2.2 Time of case data completion for NBDPN “recommended” list ≥75 % of all “recommended” NBDPN birth defects list-reported cases complete within 2 years of delivery. ≥95 % of all “recommended” NBDPN birth defects list-reported cases complete within 2 years of delivery. ≥99 % of a “recommended” NBDPN birth defects list-reported cases complete within 2 years of delivery.
Accuracy DQ3.1 Data quality procedures for verification of case diagnosis Minimal data quality procedure for case verification, majority of cases accepted as reported Verification using “some” method, e.g., clinical case report from a specialty clinic, agreement across multiple data sources, agreement between procedure and diagnostic codes, laboratory reports Verification using method beyond level 2, e.g., medical records
DQ3.2 Scope of birth defects verified Special projects, selected diagnoses, or samples only Verification for all “core” birth defects Verification for all “recommended” birth defects
DQ3.3 Level of expertise for individuals who perform case diagnosis verification Staff with no or minimal disease coding or clinical expertise perform routine case reviews Staff with expertise in disease coding or clinical training perform routine case reviews Clinical geneticist, dysmorphologist or other high level expert depending on defect routinely performs case reviews
DQ3.4 Database quality assurance process Quality checks are performed for “core” NBDPN data elements. Quality checks are performed for “recommended” NBDPN data elements. Quality checks are performed for “enhanced” NBDPN data elements.
  1. aNBDPN list of birth defects and data elements are available at www.nbdpn.org
  2. bSee supplementary material for a list of the data sources