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:
To estimate cost and outcomes of the Arthritis Foundation aquatic exercise classes from the societal perspective .
answer:
not found


question:
A precycle risk score from > or =25 to < 40 for a given patient was identified as being the optimal threshold for sensitivity ( 58.0 % ) and specificity ( 78.7 % ) .
answer:
not found


question:
Results suggest the need for careful examination of the way that collaborative care models are implemented for treating PTSD , and for additional supports to encourage primary care providers to manage PTSD .
answer:

PTSD