Table 3.

Usage of Loop (intervention arm participants, n=24).

Loop usage			Mean (range) or n (%)
Loop compositiona
	Patients who registered on Loop (regardless of baseline questionnaire completion), n (%)		20 (83)
	Initiating physicians (intervention arm, n=10) who, n (%):
		Registered on Loop	9 (90)
		Used the tool (posted at least 1 message or viewed a patient Loop)	7 (70)
	Health care providers (including initiating physician) per patient Loop, mean (range)		3 (0-5)
	Additional health care providers suggested by each patient, mean (range)		2.4 (1-5)
	Additional health care providers per patient Loop, mean (range)		1.25 (0-4)
	Patient Loops health care provider is a part of, mean (range)		1.6 (0-7)
	Family caregivers per patient Loop, mean (range)		0.5 (0-1)
Frequency of use of the tool, n			Loops, n
	Messages exchanged per Loop by registered participants (n=20)
		0	3
		1-2	5
		3-5	3
		6-10	6
		>10	3
	Views of a patient’s own Loop by the patient or caregiver (n=20)
		0	0
		1-2	3
		3-5	4
		6-10	5
		>10	8
	Posts to a patient’s own Loop by the patient or caregiver (n=20)
		0	6
		1-2	5
		3-5	3
		6-10	4
		>10	2
	Views of a patient Loop by an initiating physician (n=9)
		0	2
		1-2	1
		3-5	2
		6-10	4
		>10	0
	Posts to all their patient Loops by an initiating physician (n=9)
		0	3
		1-2	5
		3-5	1
		6-10	0
		>10	0
Use of additional features
	Time from consent to registration on Loop (days), mean (range)		39 (2-156)
	Times an issue was tagged, mean (range)		1 (1)
	Times Attention To feature was used by a patient or caregiver, mean (range)		3 (0-14)
	Times Attention To feature was used by a health care provider per Loop, mean (range)		0.6 (0-3)

^aA “Loop” is an aggregation of a patient and/or caregiver and at least the initiating physician allocated to the intervention arm, and registered on the intervention tool.