Question: One more question. Suppose your team has been analyzing data from an impact evaluation that used a one-group pretest-posttest design. In the evaluation 50 participants were classified as either sick or not sick both before and after the intervention. The pre-intervention measure appears in the dataset as a variable named SICKPRE, taking values 0 for not sick and 1 for sick. The post-intervention measure uses the same coding scheme and is named SICKPOST. A member of your team has used McNemar’s test to see whether the proportion of participants who were sick declined significantly over the course of the intervention, and you have been presented with the output appearing in Appendix 5. Looking at this output, did the proportion classified as sick increase or decrease over the course of the intervention, and was this change statistically significant?

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