LS variable metadata
Variable: NHSDHBM
Table: LBSM
Short description: NHS DHA code (part of expanded area code)
Full description:  
Coding notes: 1st character = 1st character of DHA code used by NHS
2nd character = 2nd character of DHA code used by NHS
3rd character = 3rd character of DHA code used by NHS
See Events Appendix 5

Coding scheme

-8Not coded (before 19870101 or after 19921231)

Notes: This is a new variable formed by merging NHSDH1BM, NHSDH2BM and NHSDH3BM as part of the data transfer from ICL to Model 204 environment. See also program specification sheets 2 4 3 1 - 2 4 3 15
Units of measurement:  
Source: Draft entry for births Form 309, Question 10 Applies if year of birth (BIYRABM) is greater than 1986
Former name of variable: NHSDH1BM, NHSDH2BM, NHSDH3BM
Derived: N
Derivation: Not available
Date range: From: 19870101 To: 19921231 
Keyword: Geog
Comparable variables for other individuals:  
Comparable variables for other times:  
Restricted: N
Data type: Text
Length of field: 3
Reference 1: Events Appendix 5
Reference 2: See LS Technical Volume (Hattersley and Creeser, 1995) p342 (live birth registration draft entry form), p345(record of live birth form), pp24-25, pp95-96 and p108 (general details), pp99-101 (comparability of data), p108 and pp125-136 (data quality).