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: Factors with a P value of < or =0.25 within a cycle were included in a generalized estimating equations regression model .

Answer: not found


Question: Trials involving larger patient populations will be necessary to confirm the results of this preliminary study and to determine the extent of clinical improvement , subpopulations benefited , role in heart failure therapeutics , and so forth .

Answer: not found


Question: This study examined whether 24 months of weight training exercises enhanced the effectiveness of risedronate , calcium , and vitamin D in maintaining or improving bone mineral density ( BMD ) in 223 postmenopausal breast cancer survivors .

Answer:
risedronate, calcium, vitamin D