Unique case identifier
SA  Frequency of smoking (whole cigs onl
SB  Frequency of smoking (whole cigs onl
SC  Frequency of smoking (whole cigs onl
SD  Frequency of smoking (whole cigs onl
SE  Frequency of smoking (whole cigs onl
SF  Frequency of smoking (whole cigs onl
RA  Frequency of drinking alcohol (whole
RB. Frequency of drinking alcohol (whole
RC. Frequency of drinking alcohol (whole
RD. Frequency of drinking alcohol (whole
RE  Frequency of drinking alcohol (whole
RF  Frequency of drinking alcohol (whole
Gender
White or non-white (missing data include
HZ. Whether had a hearing record at any
SZ. Individual deprivation/socio-economi
SZ. Whether school record for truancy at
HZ.  Whether ever referred on offence gr
YZ.  Whether left school at earliest opp
independent, special or behavioural educ
prevalence of offending sweep 1
variety of offending sweep 1
volume of offending sweep 1
prevalence of offending sweep 2
variety of offending sweep 2
volume of offending sweep 2
prevalence of offending sweep 3
variety of offending sweep 3
volume of offending sweep 3
prevalence of offending sweep 4
variety of offending sweep 4
volume of offending sweep 4
prevalence of offending sweep 5
variety of offending sweep 5
volume of offending sweep 5
prevalence of offending sweep 6
variety of offending sweep 6
volume of offending sweep 6
Drug use summary code at sweep 1
Drug use summary code at sweep 2
Drug use summary code at sweep 3
Drug use summary code at sweep 4
Drug use summary code at sweep 5
Drug use summary code at sweep 6