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.

Ex Input:
However , this approach can not account for potential third variables between participants that may affect both smoking and depression .

Ex Output:
not found


Ex Input:
The Quality of Well-Being Scale ( QWB ) and Current Health Desirability Rating ( CHDR ) were used for economic evaluation , supplemented by the arthritis-specific Health Assessment Questionnaire ( HAQ ) , Center for Epidemiologic Studies-Depression Scale ( CES-D ) , and Perceived Quality of Life Scale ( PQOL ) collected at baseline and postclass .

Ex Output:
not found


Ex Input:
The rate of height gain was no different for treatment and placebo groups .

Ex Output:

not found