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Case-Control Study Design (continued)
Flowchart showing Case-Control Study Design. There are two columns: one with the header "Classify/Compare", and the other ""Begin." Under the "Begin" column there is an arrow pointing down to two text boxes. The first text box is labeled "L-dopa Rx." It has an arrow pointing to the left-hand column to a text box labeled "Metaclopramide: Yes or No?." Under the L-dopa Rx text box is a text box labeled "Controls." That text box also has an arrow pointing to the left-hand column to a text box labeled "Metaclopromide: Yes or No?"
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