LS variable metadata
Variable: NHSNOBNB
Table: NBIRx
Short description: First three characters of NHS number of new birth on sample date.
Full description:  
Coding notes: 1971-1992: For live births in 1971 and 1972 the field shows 'NHS' For live births in 1973 and later years the first 3 alphabetic characters of the NHS number appear 1993 onwards: Blank - Not applicable.
Units of measurement:  
Source: Draft entry for Births (Form 309): Box A
Former name of variable:  
Derived: N
Derivation: Not available
Date range: To: 19921231 
Keyword: Geog
Comparable variables for other individuals:  
Comparable variables for other times:  
Restricted: Y
Data type: Text
Length of field: 4