Causal Inference in Statistics by Judea Pearl

Author:Judea Pearl [Pearl, Judea]
Language: eng
Format: epub
ISBN: 9781119186861
Publisher: Wiley
Published: 2016-02-12T00:00:00+00:00

Figure 3.9 Scatter plot with students' initial weights on the -axis and final weights on the -axis. The vertical line indicates students whose initial weights are the same, and whose final weights are higher (on average) for plan B compared with plan A

Study questions 3.3.3

Revisit the lollipop story of Study question 1.2.4 and answer the following questions: a. Draw a graph that captures the story.

b. Determine which variables must be adjusted for by applying the backdoor criterion.

c. Write the adjustment formula for the effect of the drug on recovery.

d. Repeat questions (a)–(c) assuming that the nurse gave lollipops a day after the study, still preferring patients who received treatment over those who received placebo.

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