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Query Results for Montana Birth Data, Years 1999 to 2017 - Percentage of All Births that were Term (37 to 41 weeks)

Year Filter: 2017
Data Grouped By:Mother's County of Residence
**The estimate has been suppressed because 1) The relative standard error is greater than 30% or when the relative standard error can't be determined. Consider aggregating years to decrease the relative standard error and improve the reliability of the estimate. 2) the observed number of events is very small and not appropriate for publication, or 3) it could be used to calculate the number in a cell that has been suppressed.

Statistical Stability

Statistical stability, reported in the data table, is based on a statistic called the "Relative Standard Error," or RSE, which is the standard error expressed as a proportion of the point estimate (e.g., 30% of the point estimate). The following conventions are used here to interpret the RSE.[[br]][[br]] * A dash (-) means that the relative standard error (RSE) is below 0.30 and the count or rate may be considered stable. [[br]] Problems with statistical instability typically occur when there is a small number of health events in a small population. For more information on statistical stability, visit the MT-IBIS Reliability & Validity page []. [[br]][[br]]

Montana Resident Births

By default, MT-IBIS birth certificate query results include Montana RESIDENT births.

Infant's Gestational Age

Gestational age (and preterm-birth) is derived from date of last normal menstrual period. In cases where menstrual period information is missing or does not concur with infant birthweight, the physician's estimated gestational age is used.
  • Office of Vital Statistics, Montana Department of Public Health and Human Services
These data were queried on: Sat, 25 Jan 2020 08:40:02 MST
The dataset was last updated on: Mon, 14 Jan 2019 11:47:52 MST

If you want to modify your query, by changing or adding filters, displaying by other demographic characteristics (age, sex, race, etc), or changing the way the results are displayed, please click on the Modify Query Definition button in the left side navigation.

The information provided above is from the Office of Epidemiology and Scientifict Support, Montana Department of Public Health and Human Services MT-IBIS web site ( The information published on this website may be reproduced without permission. Please use the following citation: " Retrieved Sat, 25 January 2020 8:40:02 from Office of Epidemiology and Scientific Support, Montana Department of Public Health and Human Services, Indicator-Based Public Healt Information System for Public Health Web site: ".

Content updated: Wed, 23 Jan 2019 08:56:08 MST