instruction:
In medical studies, treatments are tested 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 give information about the participants 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 participants is mentioned, just output "not found". Relevant information about participants include: gender, medical conditions, location, number of people participating. Do not contain participant mentions without relevant information.
question:
Differences between groups for use of community healthcare resources , return to usual work/home/leisure activities and satisfaction with their EECU care were small and not significant .
answer:
not found


question:
In COPD patients , reversibility is currently evaluated from the changes of forced expiratory volume at 1s ( ΔFEV1 ) and forced vital capacity ( ΔFVC ) .
answer:
COPD patients


question:
Costs/QALY gained discounted at 3 % were $ 205,186 using the QWB and $ 32,643 using the CHRD .
answer:

not found