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Fourth National Incidence Study of Child Abuse and Neglect (NIS–4)

Fourth National Incidence Study of Child Abuse and Neglect (NIS–4)

Fourth National Incidence Study of Child Abuse and Neglect (NIS–4)

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ates used these revised definitions <strong>and</strong> county classifications. However, the analysesregarding changes in metrostatus since the NIS–3 used the earlier metrostatus definitions.5.6.1 Differences in Harm St<strong>and</strong>ard Maltreatment Related toMetropolitan Status (Metrostatus) <strong>of</strong> County <strong>of</strong> ResidenceSignificant <strong>and</strong> marginal differences related to county metrostatus emerged inseveral categories <strong>of</strong> Harm St<strong>and</strong>ard maltreatment. 90 As detailed below, incidence rateswere consistently higher in rural counties.Harm St<strong>and</strong>ard <strong>Abuse</strong>Figure 5–23 displays the incidence rates for Harm St<strong>and</strong>ard abuse by themetrostatus <strong>of</strong> the child’s county <strong>of</strong> residence.Overall abuse. The incidence <strong>of</strong> overall Harm St<strong>and</strong>ard abuse in ruralcounties was 1.7 times the rate in major urban counties (10.8 versus 6.4 children per1,000), a statistically significant difference.Sexual abuse. The rate <strong>of</strong> Harm St<strong>and</strong>ard sexual abuse in rural counties (2.8per 1,000 children) was twice the rate in urban counties (1.4 children per 1,000), adifference that is significant. The rural rate is also 1.6 times the sexual abuse rate inmajor urban areas (1.8 children per 1,000), a difference that is statistically marginal.(Continued from previous page.)Department <strong>of</strong> Agriculture, Economic Research Service, 2003). The new system defines metropolitanareas for all urbanized areas regardless <strong>of</strong> total area population <strong>and</strong> it includes outlying counties if theymeet a commuting threshold <strong>of</strong> 25%, with no additional requirement. This affected the NIS classification<strong>of</strong> urban versus rural. In addition, the Census Bureau, using updated population data, modified the Rural-Urban Continuum Codes, which distinguished among counties based on population size (Department <strong>of</strong>Agriculture, Economic Research Service, 2004). This affected the NIS–4 classification <strong>of</strong> major urbanversus urban, the former being counties in the top tier <strong>of</strong> this system (i.e., those in metro areas withpopulations <strong>of</strong> 1 million or more).90 In each category <strong>of</strong> maltreatment or harm, decisions about the significance <strong>of</strong> differences relied on theBonferroni critical values for t. This adjusted for the multiplicity <strong>of</strong> the comparisons involved. AppendixD gives the details concerning the statistical tests for significance <strong>of</strong> metrostatus differences.5–53

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