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.

Ex Input:
Group 1 received a weekly session of posterior tibial nerve stimulation for 12 weeks and group 2 was the placebo group .

Ex Output:
not found


Ex Input:
Stent related symptoms were present in a good proportion of patients in groups 1 and 2 but there was a significant difference in the incidence of urinary tract infections ( 11.5 % versus 38.1 % , p = 0.04 ) .

Ex Output:
incidence


Ex Input:
The increase in plasma 6-keto-prostaglandin F1 alpha concentration was associated with an increase in serum HDL2 cholesterol concentration in the group taking regular exercise .

Ex Output:

plasma 6-keto-prostaglandin F1 alpha concentration, serum HDL2 cholesterol concentration