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. Author manuscript; available in PMC: 2013 Mar 27.
Published in final edited form as: JAMA Psychiatry. 2013 Feb;70(2):235–242. doi: 10.1001/jamapsychiatry.2013.276

Figure 2.

Figure 2

The cumulative probability of receiving a drug abuse (DA) diagnosis over a 20-year follow-up period for siblings where the older vs younger sibling had DA as predicted from the full Cox model, the results of which are given in Table 2.