Read the following article, answer the questions below McHugh, R. K., Sugarman,

Read the following article, answer the questions below
McHugh, R. K., Sugarman, D. E., Meyer, L., Fitzmaurice, G. M., & Greenfield, S. F. (2020). The relationship between
perceived stress and depression in substance use disorder treatment. Drug and alcohol dependence, 207, 107819.
1. State the aims of the study.
2. What are the hypotheses?
3. What are the predictor and outcome variables?
4. What is the data source for the study?
5. Describe the participants (refer to Table 1, page 2).
6. State two main findings from the study.
answer the questions