Chase, Helen C., <br/><br/>
Trends in "prematurity" :  United States : 1950-67  / 
Helen C. Chase and Mary E. Byrnes. 
 - 1 online resource (iv, 51 pages) :  illustrations. 
 - Vital and health statistics. Series 3, Analytical studies ;  number 15 DHEW publication ;  no. (HSM) 72-1030 .
 - DHEW publication ;  no. (HSM) 72-1030. Vital and health statistics.  Series 3,  Analytical studies ;  no. 15. .
<br/><br/> "January 1972."  "An analysis of the trend in live births registered in the United States, 1950-67 by weight at birth and period of gestation, including an assessment of the quality of the data. Other factors, such as age of mother, plurality, sex, and delivery in hospitals are included insofar as they have a bearing on the trends."  CRDP Program record. 
<br/><br/>Includes bibliographical references (pages 30-32). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Premature infants--United States--Statistics.<br/>Birth weight--United States--Statistics.<br/>Newborn infants--United States--Statistics.<br/>Premature infants.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Statistics, Medical.<br/>United States.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Statistics.<br/>Statistics--Medical.<br/>Statistics.
<br/><br/><label>GPO Item No.: </label>0500-E (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>HE 20.2210:3/15