1-4 Data year
5 Record type
6 Resident status
16-17 NCHS State of Occurence
14-15 Expanded NCHS State of Occurrence
18-20 NCHS County of Occurence
26 Population size - county of occurence
12 Division of occurrence
11 Region of occurrence
21-22 FIPS State of Occurrence
23-25 FIPS County of Occurrence

32-33 NCHS State of Residence 
30-31 Expanded NCHS State of Residence
34-36 NCHS County of Residence
37-39 NCHS City of Residence
40 Population size - city of residence
58 Population size - county of residence
347-349 NCHS MSA of Residence
28 Met/Nonmet county of residence
28 Division of residence
27 Region of residence 
42-43 FIPS State of Residence
44-46 FIPS County of Residence
52-53 CMSA of residence
54-57 FIPS MSA of residence
106-109 Month Prenatal Care began
110-113 Number of Prenatal Care visits
93 Adequacy of Prenatal Care recode

188-189 Sex of Child
190-192 Race of Child
201 Number of Children at delivery
193-199 Birthweight
202-207 Apgar Score
182-187 Gestation
208-209 Gestation recode
172-173 Month/year of birth recode
176-179 Month/year of birth
180 Day of week of birth

69-76 Age of Mother
91-92 Age of Mother recode
79-82 Race of Mother
86-87 Marital Status
83-85 Education of Mother
88-90 Mother's Place of Birth
77-78 Hispanic origin of Mother

94-95 Born alive, now living
96-97 Born alive, now dead
98-99 Other terminations
103-105 Total birth order
100-102 Live birth order

154-157 Age of Father
166-167 Age of Father recode
160-162 Race of Father
163-165 Education of Father
158-159 Hispanic origin of Father

307-324 Residence reporting flags
10 Attendant at birth
8-9 Place of delivery
128-132 Interval since last live birth

217-224 Method of delivery
225-241 Medical risk factors
242-245 Tobacco
246-249 Alcohol
250-252 Weight gain during pregnancy
253-259 Obstetric procedures
260-275 Complications of labor and/or delivery
276-284 Abnormal conditions of the newborn
285-306 Congenital anomalies