Mortality Data

• All data shown in this report includes Wisconsin residents only (unless otherwise noted).
• Data shown in this report from vital records death certificates includes all Wisconsin resident deaths.
• Data shown in this report from the Wisconsin Violent Death Reporting System (WVDRS) does not include Wisconsin residents who were injured or died outside of Wisconsin.
• Vital records and WVDRS data used for suicide represents unique individuals, meaning an individual is represented only once in the data.
• Vital records death certificate data includes deaths with an ICD-10 (International Classification of Diseases, 10th revision) code of suicide as the underlying cause of death.

Self-Harm Injury Data

• Hospitalization and emergency department data represents hospital and emergency department discharges and not unique individuals, i.e., an individual could be represented multiple times if they were discharged from a hospital or emergency department more than once.
• Hospitalization and emergency department data are shown only for years 2016–2017 based on codes from the ICD-10-CM (International Classification of Diseases, 10th Revision, Clinical Modification).
• The coding system changed from the 9th Revision of the ICD to the 10th Revision in October 2015 and self-harm injury data prior to 2016 is not comparable.
• Hospitalization data shown in this report includes only non-fatal hospital stays with an initial self-harm injury code.
• Emergency department visit data shown in this report includes only non-fatal treated and released visits with an initial self-harm injury code.
• Hospitalization and emergency department visits include those stays and visits with a self-harm ICD-10-CM code in any of the 9 diagnosis fields or 2 external cause of injury fields.

Statistical Methods

• Geographic variables are based on patient’s or decedent’s place of residence.
• WVDRS circumstance data are limited to cases in which circumstances were reported. See also Appendix 3, WVDRS Definitions.
• All age-adjusted rates in this report use U.S. standard population in 2000. A table of weights and age-groupings is shown in the accompanying table.
• Tests for significant differences were calculated for independent rates (males versus females, for instance) and dependent rates (state rate versus county rate) at the alpha equals 0.05 level.
• Significance was not tested for trend data.