In medical studies, the efficacy of medical treatments (called interventions) is evaluated within a group of study participants. You will be given a sentence of a study report in which your task is to list the phrases that describe the intervention(s) of the study. You should list the phrase in the same order that they appear in the text, separated by commas. If no information about the interventions is mentioned, just answer with "not found". Interventions are: a specific drug, surgery, talking therapy, a lifestyle modification, control or placebo treatment. Do not include details, dosages, frequency and duration, intervention mentions that are not in an informative span of text.
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Question: Confidence intervals around these ratios suggested wide variability of cost effectiveness of aquatic exercise .

Answer: aquatic exercise


Question: The question of whether abstinence during the months following a planned quit attempt exacerbates or improves depressive symptoms is an important clinical issue .

Answer: not found


Question: This study aimed to investigate the course of depression for patients with recently diagnosed rheumatoid arthritis ( RA ) and to investigate predictors of depression .

Answer:
not found


