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CADD Discussion 6/15/2016:
a. Summarized subject counts from CTS and LTS twins for the SAM and SAM supplemental questions. b. Discussed using alcohol and tobacco phenotypes to get longitudinal information about frequency and quantity c. One problem: lack of consistent questions across 3 waves of data.
Solutions and next steps:
a. Using Monitoring the Future (MTF) questions to look at quantity and frequency (not available for Wave 3)
b. Combining variables:
- SAM V1/V2: Frequency of drinking (days/weeks) in last year + # drinks on average per drinking days in last year
- SAM V3: Total # of drinks in a typical week in last year + # drinking weeks in last year
- MTF v1/v2: # drinking occasions/week, # drinks/occasion
- SAM supplement V1-3: typical pattern of drinking + days drinking in last 180 days
c. Including binge drinking measures from SAM and MTF
