In medical studies, treatments are tested within a group of study participants. To determine if a new treatment works, various outcomes are measured in the people who take part in the study. You will be given a sentence of a study report in which your task is to list the phrases that give information about the outcomes of the study. You should list the phrases in the same order that they appear in the text, separated by commas. If no information about the outcome is mentioned, just answer with: "not found".
 Outcomes contain: outcomes measured in patients: like blood sugar,
 outcomes regarding the intervention: like effectiveness, costs
 the score on a medical test or questionnaire,
 positive or negative events in the patient groups: like quitting smoking, or adverse reactions.
 Do not mention numbers or results, interpretations of outcomes, outcome mentions without relevant information.

[Q]: When one treatment is superior to the other two , the trial design provides better patient care , higher power , and a lower expected sample size .
[A]: not found


[Q]: Cardiovascular reactivity to psychological stress may be one mechanism for the enhanced risk , but the small number of studies examining whether OC users who smoke have greater reactivity have produced mixed results .
[A]: not found


[Q]: Although an increasing number of group-based programs for the improvement of social skills have been described , randomized controlled trials are needed to evaluate their efficacy .
[A]:
social skills