TABLE 1.

Participant response rate and questionnaire answering.

	Italy	CRO-contact	CRO-no contact	CRO-unrelated	Total
Contacted	100	41	35	55	231
Responded	72	28	21	43	164
Response rate (Responded/contacted*100%)	72.00%	68.29%	60.00%	78.18%	71.00%
Fully completed (% of responded)	58 (81%)	18 (64%)	16 (76%)	32 (74%)	124 (76%)
Partially completed (% of responded)	14 (19%)	9 (32%)	5 (24%)	11 (26%)	39 (24%)
No-consent (% of responded)	0 (0%)	1 (4%)	0 (0%)	0 (0%)	1 (0.06%)
Outliers (% of responded)	7 (10%)	2 (7%)	2 (10%)	3 (7%)	14 (9%)