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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Addiction. 2010 Dec 23;106(4):749–758. doi: 10.1111/j.1360-0443.2010.03254.x

Figure 3.

Figure 3

Variation in estimates of parameters with change in distribution of γ.

Figure 3(a): Uncertainty in Rd when Mean(γ) is varied.

Figure 3(b): Variation in estimated values of β0 and β2 with change in γ estimates.