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- Although CDC WONDER contains a wealth of data, any counts fewer than 10 are suppressed for confidentiality reasons, resulting in left-censored data.
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Are death counts based on death counts suppressed?
Are death counts between 1-9 in the data file suppressed?
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Aug 3, 2023 · Only 46 counties have all data elements present for all age groups and quarters because those counties had zero COVID-19 deaths reported in 2020. Overall, 26.6% of data elements were suppressed, ranging from 6.2% in quarter 1 to 41.1% in quarter 4 ( S1 Fig ).
- 10.1371/journal.pone.0288961
- 2023
- PLoS One. 2023; 18(8): e0288961.
- Overview
- Download Data for Maternal Mortality
This data visualization presents national-level provisional maternal mortality rates based on a current flow of mortality and natality data in the National Vital Statistics System. Provisional rates which are an early estimate of the number of maternal deaths per 100,000 live births, are shown as of the date specified and may not include all deaths and births that occurred during a given time period (see Technical Notes).
A maternal death is the death of a woman while pregnant or within 42 days of termination of pregnancy irrespective of the duration and the site of the pregnancy, from any cause related to or aggravated by the pregnancy or its management, but not from accidental or incidental causes. In this data visualization, maternal deaths are those deaths with an underlying cause of death assigned to International Statistical Classification of Diseases, 10th Revision (ICD-10) code numbers A34, O00–O95, and O98–O99.
The provisional data presented on Figures 1-3 include reported 12 month-ending provisional maternal mortality rates overall, by age, and by race and Hispanic origin. Provisional maternal mortality rates presented in this data visualization are for “12-month ending periods,” defined as the number of maternal deaths per 100,000 live births occurring in the 12-month period ending in the month indicated. For example, the 12-month ending period in June 2020 would include deaths and births occurring from July 1, 2019, through June 30, 2020. Evaluation of trends over time should compare estimates from year to year (June 2020 and June 2021), rather than month to month, to avoid overlapping time periods. In the visualization and in the accompanying data file, rates based on death counts less than 20 are suppressed in accordance with current NCHS standards of reliability for rates. Death counts between 1-9 in the data file are suppressed in accordance with National Center for Health Statistics (NCHS) confidentiality standards.
Provisional data presented on this page will be updated on a quarterly basis as additional records are received. Previously released estimates are revised to include data and record updates received since the previous release. As a result, the reliability of estimates for a 12-month period ending with a specific month will improve with each quarterly release and estimates for previous time periods may change as new data and updates are received.
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Provisional Maternal Mortality Rates, 12-month period ending September 2023
Based on data available for analysis on: January 7, 2024
NOTES: Rates based on death counts less than 20 are suppressed in accordance with current NCHS standards of reliability for rates. This includes the Native Hawaiian or other Pacific Islander, non-Hispanic category , and some data points for American Indian or Alaska Native, non-Hispanic category in Figure 3. Reported provisional rates are the number of maternal deaths per 100,000 live births occurring in the U.S. among U.S. residents received and processed for the 12-month period indicated. Reported provisional counts may not include all deaths and births that occurred during a given time period; therefore, they should not be considered comparable with final data and are subject to change. Maternal deaths are identified using ICD–10 underlying cause-of-death codes: A34, O00–O95, and O98–O99.
SOURCE: NCHS, National Vital Statistics System. Estimates for 2022 and 2023 are based on provisional data. Estimates for 2019-2021 are based on final data (available from: http://wonder.cdc.gov/).
Per CDC policy (2), any counts fewer than 10 should be suppressed for confidentiality reasons, resulting in left-censored data. Because of high rates of suppression, many chronic disease researchers opt to focus their inference in a few highly populated regions (3) or state- or national-level trends (4), despite known geographic disparities in ...
- Harrison Quick
- 2019
We inferred from WONDER’s published suppression guidelines that the information “missing” from our rate calculations was likely age-specific mortality count data and associated crude rates for age groups that have fewer than 10 observations each.
- Chetan Tiwari, Kirsten Beyer, Gerard Rushton
- 10.2105/AJPH.2014.301900
- 2014
- 2014/08
Apr 26, 2024 · Notes: Death counts are suppressed for data representing zero to nine (0-9) deaths. See Assurance of Confidentiality for more information. Crude Rates are expressed as the number of deaths reported each calendar year per the factor you select. The default factor is per 100,000 population, reporting the death rate per 100,000 persons.
Technical Notes. Nature and Sources of Data. Provisional drug overdose death counts are based on death records received and processed by the National Center for Health Statistics (NCHS) as of a specified cutoff date. The cutoff date is generally the first Sunday of each month.
. Note: Provisional death counts are based on death certi cate data received and coded by the National Center for Health Statistics as of February 2, 2022. Death counts are delayed and may di er from other published sources (see Technical Notes). Counts will be updated every Wednesday by 5pm.
