1....... 1-5 Card number (sequence, form type, form number, revision number)
2....... 6-14 NINDB case number
3...AR-1 15-28 Name, last:  MOTHER REGISTRATION ADMIMISTRATIVE
4...AR-1 29-35 Institution identification:  MOTHER REGISTRATION ADMIMISTRATIVE
5...AR-1 36 Type of institution:  MOTHER REGISTRATION ADMIMISTRATIVE
6...AR-1 37 Name, first, first letter:  MOTHER REGISTRATION ADMIMISTRATIVE
7...AR-1 38-39 Registration date (mo): MOTHER REGISTRATION ADMIMISTRATIVE
8...AR-1 40-41 Registration date (day):  MOTHER REGISTRATION ADMIMISTRATIVE
9...AR-1 42-43 Registration date (yr):  MOTHER REGISTRATION ADMIMISTRATIVE
10...AR-1 44-45 Form AR-1 initiated, date (mo):  MOTHER REGISTRATION ADMIMISTRATIVE
11...AR-1 46-47 Form AR-1 initiated, date (day):  MOTHER REGISTRATION ADMIMISTRATIVE
12...AR-1 48-49 Form AR-1 initiated, date (yr):  MOTHER REGISTRATION ADMIMISTRATIVE
13...AR-1 50-51 LMP, first day (mo): MOTHER, PRECONCEPTION GYNECOLOGICAL HISTORY
14...AR-1 52-53 LMP, first day (day): MOTHER, PRECONCEPTION GYNECOLOGICAL HISTORY
15...AR-1 54-55 LMP, first day (yr): MOTHER, PRECONCEPTION GYNECOLOGICAL HISTORY
16...AR-1 56-57 Birth date (mo): MOTHER, GENERAL, SOCIOECONOMIC INFO
17...AR-1 58-59 Birth date (day): MOTHER, GENERAL, SOCIOECONOMIC INFO
18...AR-1 60-61 Birth date (yr): MOTHER, GENERAL, SOCIOECONOMIC INFO