census logo

The Quality and Completeness of Birthweight and Gestational Age Data in Computerized Birth Files

Quality of the system and assessment

Abstract: Computerized birth files compiled by the State of North Carolina for the years 1975-1977 were analyzed for omissions and inaccuracies. A wide range in the per cent missing values was found for different data items, from essentially none missing (birthweight, sex, race) to about 20 per cent missing (gestational age, paternal social data). Recorded birthweight showed the expected skewing from a normal distribution. The only demonstrable inaccuracy was in the form of digit preference, probably causing errors of 1 oz (28.3 g). Reported gestational ages were more suspect, falling outside the range of biologically plausible gestation length in 2.8 per cent of cases. An additional
1.5 per cent of gestational ages were found to be misdated by four to 20 weeks based on the observed bimodal weight distributions among births of the same reported gestational age.  (Am J Public Health 1980; 70:964-973.)

Author: Richard David

Also In This Category

On a scale of 1-5, please rate the helpfulness of this article

Not Helpful
Very Helpful
Optionally provide your comments to help us improve this article...

Thank you for your feedback!

Add Your Comments
Email Address:
RadEditor - HTML WYSIWYG Editor. MS Word-like content editing experience thanks to a rich set of formatting tools, dropdowns, dialogs, system modules and built-in spell-check.
RadEditor's components - toolbar, content area, modes and modules
Toolbar's wrapper  
Content area wrapper
RadEditor's bottom area: Design, Html and Preview modes, Statistics module and resize handle.
It contains RadEditor's Modes/views (HTML, Design and Preview), Statistics and Resizer
Editor Mode buttonsStatistics moduleEditor resizer
RadEditor's Modules - special tools used to provide extra information such as Tag Inspector, Real Time HTML Viewer, Tag Properties and other.
Verification Code:
Last Modified: 8 Years Ago
Last Modified By: admin
Type: INFO
Article not rated yet.
Article has been viewed 1.1K times.
Customer Support Software By InstantKB 2015-2
Execution: 0.000. 11 queries. Compression Disabled.