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. Author manuscript; available in PMC: 2006 Apr 10.
Published in final edited form as: Drug Alcohol Depend. 2005 Apr 26;80(1):1–14. doi: 10.1016/j.drugalcdep.2005.02.005

Fig. 2.

Fig. 2.

Length of time between abuse and dependence (LOTAD) differences between early initiators and other initiators for DSM-IV disorders related to use of cannabis, alcohol, opiates, and cocaine. Notes: In each of the four subfigures are presented two pairs of survival curves, one pair for early initiators (abuse and dependence) and one pair for other initiators (abuse and dependence). The size of the gap between the abuse and dependence curve for each type of initiator is the LOTAD related to the substance depicted in the subfigure. Legend: (—) other initiators abuse; (- - -) other initiators dependence; (-·-·-) early initiators abuse; (···) early initiators dependence.