LS variable metadata
Variable: MAOMYRNB
Table: NBIR
Short description: Age at marriage (years) of mother of new birth on sample date.
Full description:  
Coding notes: 1971-1985:
15-55 = Age at marriage
space= Birth outside marriage
1986 onwards:
11-55 = Age at marriage (15+ if mother's birth place is UK)
Note: 1971-1985: This is calculated using duration of marriage and age of mother at birth of child, both of which might have been imputed 1986-1989: Calculated using date of birth of mother. If age of mother is stated or imputed because date of birth of mother is not stated, age at marriage is calulated by subtracting duration of marriage from age at maternity 1990: Calculated using date of birth of mother and date of marriage. If age of mother is stated or imputed because year or birth of mother is not stated, age at marriage is calculated by subtracting duration of marriage from age at maternity N.B. For any years, if d.o.b. of mother and date of marriage are available, these are used to calculate age at marriage.
Notes:  
Units of measurement:  
Source: Draft entry for Births (Form 309): derived from confidential particulars Questions 2 and 3
Former name of variable: MAOMYRBNB
Derived: N
Derivation: Not available
Subject:  
Date range: From: 19860101 To: 19910420 
Keyword: Marital Age
Classification:  
Comparable variables for other individuals:  
Comparable variables for other times:  
Restricted: N
Data type: Text
Length of field: 2
Reference 1: See LS Technical Volume (Hattersley and Creeser, 1995) p342 (live birth registration draft entry form), p345 (record of live birth form), pp24-25, pp94-95 (general details), pp99-101 (comparability of data), pp109-115 (data quality).