Calculates the standard deviation for the selected average measures. The results are calculated for the live births that met your query criteria.
Limit the population to specific locations here. Alternately, you can leave the settings at the default values the United States and choose to organize or group the data results by State to show these stratifications.
This dataset includes states no territories and counties with a total population over , persons. Limit your data request to specific locations here.
You can select any number of locations. The default settings are national data, the United States. Click the round button to choose between Regions two types of regions, both include states and counties or States includes Counties. See How do I use a Finder? The default value is all locations the United States. See Finder Tool help for more hints. Notes: Location is based on mother's legal residence recorded on the birth certificate.
About Counties: County-level data are shown for counties with populations of , persons or more. All counties with fewer than , persons are shown combined together under the label "Unknown County. The data identifies counties with a population of , persons or more in the year Census. There are 66 more counties named in the data than in the data, and 56 more counties named in the data than in the data. About Regions and Divisions: Regions and divisions are multi-state groups.
Regions include states and counties, yet do not include territories. Alternately, you can leave the settings at the default values the United States and choose to organize or group the data results by these fields to show these stratifications. The large central metro category contains counties in metropolitan statistical areas MSAs of one million or more population that have been identified by NCHS classification rules as central because they contain all or part of a principal city of the area.
The large fringe metro category contains the remaining counties similar to suburbs in MSAs of one million or more. Counties in MSAs of , to , population are assigned to the medium metro category and counties in MSAs with populations under , are assigned to the small metro category. Nonmetropolitan counties that are designated by the Office of Management and Budget as belonging to a micropolitan statistical area are assigned to the micropolitan category and the remaining nonmetropolitan counties are assigned to the noncore category.
The large central metro category is the most "urban" category and the noncore category is the most "rural" category. However, for those counties whose category differs in the two schemes, some moved from a less urban to a more urban category, while others moved from a more urban category to a less urban category.
It is recommended that the micropolitan category not be aggregated with metropolitan categories. The Urbanization categories are identified by two columns, labels and codes, in data extracts. Each county is assigned to one of these six categories. Each death is associated with a category based on the county of the person's legal residence. See Step 2. The Nonmetro group includes counties in these Urbanization categories: Micropolitan non-metro and NonCore non-metro.
Age of Mother - under 15 years; 5 year age groups through age This field indicates the Hispanic ethnicity of the mother. See How do I select items from the list box? Notes: About birth and fertility rates for Hispanic Origin in years current year : Rates returned for Hispanic Origin in combination with either Bridged Race or Single Race are calculated differently here than in other natality published reports.
Fertility and birth rates are not available for Expanded Hispanic Origin categories because this level of detail is not available in the population denominator data. For birth and fertility rates by Hispanic Origin, limit or group results by the Hispanic Origin categories. Before , births to Dominican mothers were coded to the "Other and Unknown Hispanic" category, thus there is a discontinuity between and for the "Other and Unknown Hispanic" category. When you export the results of your data request, the labels and the codes are in separate columns.
Limit your data to the selected categories for the race of the mother. The default option is all race groups. Notes: About "Single Race" categories for years Beginning in , all jurisdictions and the National Center for Health Statistics are reporting race consistent with the Office of Management and Budget standards "single race".
Single race is defined as one race reported on the birth certificate. About the "Not Available" Single Race category for years Single Race groups are only available for births in and later years. For births in years , births are reported in the Single Race category "Not Available" and the measures for the 6 standard Single Race categories are reported as "Missing.
For year and later, births are reported in the Bridged Race category "Not Available" and the measures for the 4 standard Bridged Race categories are reported as "Missing. This field indicates the marital status of the mother as recorded on the birth certificate. Notes: Beginning in , due to state statutory restrictions, California no longer provides record-level data on the marital status of the mother for births occurring to California residents and non-residents including residents of other states.
For these births, Marital Status is reported as "Not Available. When the data results are exported to a file, the Marital Status code is shown in a separate column from the category label. This field indicates the age group of the mother at the time of birth. For births through year , maternal age is available in 9 age groups: under 15 years; 5 year age groups through age For births in years , maternal age is available in 4 sets of age groups: 9 groups of 5-year increments; 10 groups with categories for and year old mothers, and 5-year age increments for older mothers; 13 groups with single-year age categories for 15, 16, 17, 18, and 19 year old mothers, and 5-year age increments for older mothers; Yearly age groups with an age category for year old mothers, and single-year age increments for older mothers.
Click a round button to switch between the maternal age lists for births in years and later. Note: When the data results are exported to a file, two columns are provided, a column for the Age group code value and a column for the label. See codes and labels for the basic 9 age groups below.
Code Label "15" Under 15 years "" 15 - 19 years "" 20 - 24 years "" 25 - 29 years "" 30 - 34 years "" 35 - 39 years "" 40 - 44 years "" 45 - 49 years "" 50 - 54 years. This field indicates a range for the number of years of education received by the mother at the time of birth. Notes: About Maternal Education data: Education information from the revision of the birth certificate is not comparable to the information based on the earlier certificate. Thus, Education data have been recoded to "Excluded" for births, based on the form of the birth certificate used in the mother's place of residence in the year the birth occurred.
For years , all reporting areas used the U. Standard Certificate of Live Birth and no data are recoded to "Excluded. Standard Certificate of Live Birth, and Education data from those reporting areas that had implemented the U.
Standard Certificate of Live Birth are recoded to "Excluded. Standard Certificate of Live Birth. For years and later, all reporting areas are using the U. No Education data are recoded to "Excluded.
For births that occurred in Connecticut and New Jersey 2 reporting areas. For births that occurred in and later years: "Excluded" data are "Missing" for births in and later years, because all reporting areas are consistent with the U. When the data results are exported to a file, two columns are provided for Maternal Education, the code value and the label. Limit your data for any of the following data elements: Year : , or , or Gender Sex of Child : Female; Male.
Birth Weight : grams or less; - grams; - grams; - grams; - grams; - grams; - grams; - grams; - grams; - grams; - grams; Not stated. Gestational Age at Birth : Under 20 weeks; 20 - 27 weeks; 28 - 31 weeks; 32 - 35 weeks; 36 weeks; 37 - 39 weeks; 40 weeks; 41 weeks; 42 weeks or more; Unknown. Month of Birth : January-December. Weekday of Birth : Sunday-Saturday.
Live Birth Order : 1st child born alive to mother - 6th child and over born alive to mother; Not Stated. Hint: You can only pick 1 gestational age group or birth weight list for any data request. The round radio button indicates the selected list, any selections in the other gestational age or birth weight lists are ignored. The "by-variables" in section 1 and the round radio button selections must match. For example, if you select to group by "Gestational Age - Weekly," then the radio button automatically sets to the "Gestational Age - Weekly" selection list.
If you change the radio button to a different list, then the "by-variable" also changes to match. This field indicates the gender of the child as recorded on the birth certificate. Note: When the data results are exported to a file, two columns are shown, a column for the code value and a column for the label. Note: When you export the results of your data request, the labels and the codes are in separate columns.
Data for years Gestational Age at Birth: Under 20 weeks; 20 - 27 weeks; 28 - 31 weeks; 32 - 35 weeks; 36 weeks; 37 - 39 weeks; 40 weeks; 41 weeks; 42 weeks or more; Unknown.
The categories in "Gestational Age Group2" with 11 age groups changed with the April release. A new category was introduced: "39 weeks". The data code values changed, please see the tables below. Before the April release, the "Gestation Age Group2" categories for years were: Under 20 weeks; weeks; weeks; weeks; weeks; weeks; 40 weeks; 41 weeks; 42 or more weeks; Unknown.
When the data results are exported to a file, the Gestational Age codes are shown in a separate column from the category label. The Birth Weight field indicates weight ranges for the child at birth. For years , birth weight is available in the 12 categories list shown below.
For years and later, the infant's weight at birth is available in 3 sets of categories, through grams, or Not stated: 12 groups in gram increments; 14 groups in gram increments; gram increments. Click a round button to switch between the maternal age lists for years and later.
This is a shift of 1 gram from the previous criterion of 2, grams or less, which was recommended by the American Academy of Pediatrics in and adopted in by the World Health Organization in the International Lists of Diseases and Causes of Death, Sixth Revision. Errata: For birth weight data shown in WONDER before May 8, , 21 births that occurred in year were erroneously reported in the birth weight category grams, instead of the "Not stated" birth weight category.
These 21 births are now reported in "Not stated" birth weight category. When the data results are exported to a file, two columns are provided, a column for the code and a column for the label. The table below shows the codes and labels for "Birth Weight 12" with 12 categories.
Code Label "01" grams or less "02" - grams "03" - "04" - grams "05" - grams "06" - grams "07" - grams "08" - grams "09" - grams "10" - grams "11" - grams "12" Not stated.
When the data results are exported to a file, the code is shown in a separate column from the category label. This field indicates the month in the pregnancy when prenatal care began. Notes: About Prenatal Care data: All reporting areas collect information on Prenatal care, but information from the revision of the birth certificate is not comparable to the information based on the earlier certificate.
Thus, Prenatal Care data have been recoded to "Excluded" for births, based on the form of the birth certificate used in the mother's place of residence in the year the birth occurred. For the years , all reporting areas used the U. No Prenatal Care data are recoded to "Excluded. Standard Certificate of Live Birth in the specified year.
Note that prior to the February data update, these "Excluded" data were recoded to "Not on Certificate. For births that occurred in Connecticut and New Jersey, 2 reporting areas.
This field indicates the mother's total number of live births, including this birth. Live birth order data are only included for data in the year and later. Code Label "01" 1st child born alive to mother "02" 2nd child born alive to mother "03" 3rd child born alive to mother "04" 4th child born alive to mother "05" 5th child born alive to mother "06" 6th child or more born alive to mother "99" Unknown or not stated.
This field indicates the place of birth. Birthplace data are only included for data in the year and later. The table below shows the codes and labels for the Birthplace categories for births in years This field indicates whether the baby was born by Cesarean section or vaginal birth. Method of delivery data are only included for data in the year and later. This field indicates the attendant at the time of birth.
Birth attendant data are only included for data in the year and later. These fields were previously available for births in years Birth anomaly data for New Mexico in were coded to "Not Reported.
This field indicates whether Anencephalus is reported as a congenital anomaly of the newborn. Note that data for birth anomalies are only available for years and later. See the table showing Congenital Anomaly of the Newborn Codes. This field indicates whether Down Syndrome is reported as a congenital anomaly of the newborn. Refer to the guide book for birth certificates regarding risk factors in this pregnancy. Refer to the current standard birth certificate and instructions.
See the table below showing Maternal Risk Factor Codes. NCHS will evaluate the data request. Please allow weeks for processing. During the process, NCHS reviewers may request further information from the applicant by email — please check your emails and respond to any NCHS queries as quickly as possible to avoid further delays. If copies of the files will be housed at more than one institution, an Agreement is required for each institution.
If you have not been notified about a decision after weeks, you may check on the status of your application. Please forward your original application and request a status update by emailing NCHS at nvssrestricteddata cdc. Once researchers have applied for and received approval to access restricted-use data, all data users associated with an approved research project must agree to specific conditions of usage, including the following:.
Skip directly to site content Skip directly to page options Skip directly to A-Z link. National Center for Health Statistics. No change has been made to other data items. This increase is a result of the phased implementation of the newly revised U.
Standard Certificate of Live Birth and a consequent need for a much longer record length. If you have difficulty unzipping these files, you may need to use different compression software such as the newest versions of WinZip external icon or WinRAR external icon.
Please be advised that the births files are massive flatfiles that cannot be opened using, for example, a text editor or spreadsheet application. Since the birth files are flatfiles, you will need input code files.
A collection of vital statistics products including tables, data files, and reports that allow users to access and examine vital statistics and population data interactively.
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