{"title":"The Impact of Data Suppression on Re-Identification Risk and Data Access in the National Child Abuse and Neglect Data System.","authors":"Martin Eiermann, Sarah Sernaker","doi":"10.1177/10775595251337073","DOIUrl":null,"url":null,"abstract":"<p><p>In summer 2024, the Children's Bureau revised the rules that govern data suppression in datasets from the National Child Abuse and Neglect Data System (NCANDS). To minimize the risk of re-identification, researchers had previously been unable to identify counties with fewer than 1000 annual maltreatment cases. Under the new data suppression rule, county identifiers will only be suppressed for counties with fewer than 700 cases. In this report, we document the consequences of this shift for research data access and re-identification risks, showing that reducing the data suppression threshold increased the number of identifiable counties from 835 to 1096 (a 31.3% increase) and doubled the number of identifiable rural counties. The percentage of reported children who face a particularly elevated re-identification risk due to having unique demographic characteristics increased from 0.7% to 1.0%.</p>","PeriodicalId":48052,"journal":{"name":"Child Maltreatment","volume":" ","pages":"10775595251337073"},"PeriodicalIF":3.3000,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Child Maltreatment","FirstCategoryId":"90","ListUrlMain":"https://doi.org/10.1177/10775595251337073","RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"FAMILY STUDIES","Score":null,"Total":0}
引用次数: 0
Abstract
In summer 2024, the Children's Bureau revised the rules that govern data suppression in datasets from the National Child Abuse and Neglect Data System (NCANDS). To minimize the risk of re-identification, researchers had previously been unable to identify counties with fewer than 1000 annual maltreatment cases. Under the new data suppression rule, county identifiers will only be suppressed for counties with fewer than 700 cases. In this report, we document the consequences of this shift for research data access and re-identification risks, showing that reducing the data suppression threshold increased the number of identifiable counties from 835 to 1096 (a 31.3% increase) and doubled the number of identifiable rural counties. The percentage of reported children who face a particularly elevated re-identification risk due to having unique demographic characteristics increased from 0.7% to 1.0%.
期刊介绍：
Child Maltreatment is the official journal of the American Professional Society on the Abuse of Children (APSAC), the nation"s largest interdisciplinary child maltreatment professional organization. Child Maltreatment"s object is to foster professional excellence in the field of child abuse and neglect by reporting current and at-issue scientific information and technical innovations in a form immediately useful to practitioners and researchers from mental health, child protection, law, law enforcement, medicine, nursing, and allied disciplines. Child Maltreatment emphasizes perspectives with a rigorous scientific base that are relevant to policy, practice, and research.
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