Avon Longitudinal Study of Parents and Children
ALSPAC Adolescence (13 years – 18 years 11 months)
Codes
Name
CCM100
-
-9999 
Consent withdrawn -
-11 Triplet / quadruplet -
-10 Not completed -
-1 No response -
1 Never -
2 Once -
3 Twice -
4 3 times -
5 4 times -
6 5 times -
7 More than 5 times -
8 Varies