Table 1

Intervention duration, participant-provider contact time, subsequent intervention compliance, attrition and self-report outcome over respective study duration

Study	Number of participants at baseline	Intervention duration	Estimated hours of contact	Follow-up duration months	Compliance	Attrition	Effect of intervention compared to control on physical activity outcome at follow-up
Study	Number of participants at baseline	Intervention duration	Estimated hours of contact	Follow-up duration months	Compliance	Attrition	6m	9m	12m	18m	29m
Brosseau	222	12 months	178	18	77% 0–3 months 60% at 12 months	18% at 6 months 41% at 18 months	0	.	0	0	.
Hughes	215	8 weeks	36	12	70%	45.1% at 6 months 58% at 12 months	+	.	+	.	.
Lorig	292	6 weeks	78	12	Over 90%	23%	0	.	0	.	.
Murphy	54	6 months	14	6	Over 79%	0%	0	.	.	.	.
Rosemann	1021	6 month	Less than 7	9	Over 90%	22.10%	.	0	.	.	.
Schlenk	26	15 weeks	15	12	Over 90%	19%	+	.	+	.	.
Svege	109	12 weeks	36	29	75%	6%	0	.	0	0	0

(0) No significance difference in self-reported physical activity between intervention group and control, (+) significance difference in self-reported physical activity between intervention group and control, (.) no data.