R - Derived Variables

The main survey was conducted by a nurse

Derived Variables
SMOK42_1(Derived): Smoking at 42 codes 0 to 2
SMOK42_2(Derived): Smoking at 42 codes 0 to 6
SC42_1(Derived): Social Class at 42
SC0_1(Derived): Social Class at birth
REG0_58(Derived): Region at birth (based on pre-1974 regions)
REG46_58(Derived): Region at age 46 (based on pre-1974 regions)
REG46_04(Derived): Region at age 46 (based on post-1974 regions)
BRESPS0(Derived): Final outcome code
Question:
None
Question Asked:
None
Respondent:
None
Keywords:

Valid:
9377
Missing:
0
Minimum:
11.0
Maximum:
550.0
Coding Frame:
None
Derivation:
None
Derivation Code:
Notes:
None

Tabulation:
ValueLabelFreq. % 
11Dress Reheasal - Productive interview at original address29 0.3 
110Productive interview at original address8610 91.8 
140Productive interview at new address718 7.7 
210Partial productive interview at original address10 0.1 
240Partial productive interview at new address1 0.0 
550Lost productive9 0.1 
-1Not Applicable  
46Dress Reheasal - Refusal to telephone unit0 0.0 
78Dress Reheasal - Cohort Members Outside UK0 0.0 
79Dress Reheasal - Other reason for unproductive outcome0 0.0 
310No contact after 8 telephone calls0 0.0 
340No contact after 4 visits by ground tracer0 0.0 
350New address within N. Ireland/Channel Islands0 0.0 
410Refusal to office after advance letter0 0.0 
430Refusal to nurse0 0.0 
450Broken appointment, could not be re-contacted0 0.0 
460Refusal to telephone unit0 0.0 
470Proxy refusal0 0.0 
480Refusal to ground tracer0 0.0 
490Refusal to office after appointment made0 0.0 
510Ill (at home during survey period)0 0.0 
520Away in hospital/on holiday0 0.0 
560Cohort Member died0 0.0 
650Complete refusal of information0 0.0 
680New address not known0 0.0 
690New address refused0 0.0 
720Demolished/derelict address0 0.0 
730Vacant/empty0 0.0 
780Cohort Members Outside UK0 0.0 
790Other reason for unproductive outcome0 0.0 
791Cohort Member has subsequently withdrawn data0 0.0 
BRESPS1(Derived): Summary of cohort, issued sample and response to biomed
BRESPS2(Derived): NCDS biomedical response - all cohort