MICH-8.2 Reduce very low birth weight (VLBW)
About the Data
Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.
Number of live births with birth weight of less than 1,500 grams (3 lbs, 4oz)
Number of live births
Information on birthweight is available for the entire United States. Birthweight is reported in some areas in pounds and ounces and in other areas as grams. However, the metric system is used to tabulate and present the statistics to facilitate comparison with data published by other groups. The categories for birthweight are consistent with the recommendations in the International Statistical Classification of Diseases, Tenth Revision (ICD–10). ICD–10 defines low birthweight as less than 2,500 grams. Very low birthweight is defined as less than 1,500 grams.
To establish the continuity of class intervals needed to convert pounds and ounces to grams, the end points of these intervals are assumed to be half an ounce less at the lower end and half an ounce more at the upper end. For example, 2 lb 4 oz–3 lb 4 oz is interpreted as 2 lb 3 ½ oz–3 lb 4 ½ oz.
A description of the very low birth weight measurement has been published by NCHS.
Additional resources about the objective
- Heck, K.E., and Klein, R.J. Operational definitions for year 2000 objectives: Priority area 14, Maternal and Infant Health. Healthy People 2000 Statistical Note. No. 14. Hyattsville, MD: NCHS, 1998.