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. Author manuscript; available in PMC: 2018 Feb 16.
Published in final edited form as: Lancet Diabetes Endocrinol. 2017 Jul 12;5(10):808–815. doi: 10.1016/S2213-8587(17)30176-6

Figure 2. Subgroups identified by the representative causal tree.

Figure 2

Nodes indicate the percent of the training data sample in each subdivision of the data, with the covariate and split point identified underneath. For example, subgroup 1 contains 16% of the training data and includes participants with baseline HbA1C less than 6·8% and baseline SF-36 general health score less than 48, and subgroup 2 contains 24% of the training data and includes participants with baseline HbA1C less than 6·8% and baseline SF-36 general health score 48 or higher. Absolute risk reduction refers to the primary outcome of the Look AHEAD trial. For clarity, we removed from this figure two subgroups each containing 1% of the training data. SF-36 Short Form Health Survey. GH=general health. MCS=Mental Component Summary. ARR=absolute risk reduction (calculated using the testing data).