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	DEFINITIONS AND TERMINOLOGY                                             
                                                                                                              
Apgar Score  -  The numerical expression of the condition of a newborn infant, being                          
the sum of points gained on assessment of the heart rate, respiratory effort, muscle                          
tone, reflex irritability, and color.                                                                         
                                                                                                              
Birthweight  -  Weight in grams of fetus or infant at time of delivery (recorded earlier in                   
pounds and ounces or in grams).                                                                               
                                                                                                              
Clinical Gestation  -  Gestation as reported on the birth or fetal death certificate as                       
estimated from the last menstrual period and the date of delivery.                                            
                                                                                                              
Computed Gestation  -  The number of completed weeks elapsed between the first day                            
of the last menstrual period and the date of delivery.                                                        
                                                                                                              
Congenital Anomaly  -  Physical, physiological, or metabolic abnormality existing before                      
or at birth.                                                                                                  
                                                                                                              
Fetal Death  -  Death prior to the complete expulsion or extraction from its mother of a                      
product of human conception, with 20 weeks or more gestation and/or weighing 350                              
grams or more.  The death is indicated by the fact that after such expulsion or                               
extraction, the fetus does not breathe or show any other evidence of life such as                             
beating of the heart, pulsation of the umbilical cord or definite movement of voluntary                       
muscles.  Heartbeats shall be distinguished from the transient cardiac contractions and                       
respiration shall be distinguished from fleeting respiratory efforts or gasp.                                 
                                                                                                              
Infant Death  -  Death of an individual under one year of age.                                                
                                                                                                              
Live Birth  -  Complete expulsion or extraction from its mother of a product of human                         
conception, irrespective of the duration of pregnancy, which after such expulsion or                          
extraction, breathes or shows any other evidence of life, such as beating of the heart,                       
pulsation of the umbilical cord or definite movement of voluntary muscles, whether or                         
not the umbilical cord has been cut or the placenta is attached.  Heartbeats shall be                         
distinguished from the transient cardiac contractions; respirations shall be distinguished                    
from fleeting respiratory efforts or gasps.                                                                   
                                                                                                              
Live Birth Interval  -  The period from the date of the last live birth to the current birth.                 
                                                                                                              
Live Birth Order  -  The number of children born alive to a mother, including the current                     
child.                                                                                                        
                                                                                                              
                                                                                                              
Low Birthweight  -  Birthweight less than 2500 grams (5 1/2 pounds). Prior to 1979, low birth                 
weight was less than 2501 grams.                                                                              
                                                                                                              
Neonatal Death  -  Death occurring to an individual less than 28 days of age.                                 
                                                                                                              
Occurrence  -  County and state where the event occurred.                                                     
                                                                                                              
Perinatal Death  -  Fetal or Neonatal death.                                                                  
                                                                                                              
Plural Delivery - Second or later delivery from a multiple gestation.                                         
                                                                                                              
Plurality  -  Classification of a birth by the number of children born to the mother for a                    
single pregnancy.                                                                                             
                                                                                                              
Population  -  The total of all individuals in a given area.                                                  
                                                                                                              
Postneonatal Death  -  Death occurring to an individual 28 days of age or more, and less                      
than one year.                                                                                                
                                                                                                              
Pregnancy Interval  -  The period from the date of last live birth or termination to the                      
current birth or termination.                                                                                 
                                                                                                              
Pregnancy Order  -  The number of pregnancies to a female, including the current one.                         
                                                                                                              
Residence - County and state of usual place of residence. For births and fetal deaths,                        
usual place of residence of mother is used. Residence may be different than mailing address.                  
                                                                                                              
Underlying Cause of Death  -  Disease or injury that initiated the train of morbid events                     
leading directly to death, or the circumstances of the accident or violence that produced                     
the fatal injury.                                                                                             
                                                                                                              
VBAC - Vaginal birth after previous Cesarean Section.                                                         
 
 
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