Table 2.

Frequency and mode of contact of lifestyle intervention

Study name	Type of contact	Mode of contact	Number of dietary interventions in year 1	Number of dietary interventions in year 2	Proportion of first year interventions in first 6 months (%)
All studies	Individual = 7 Group only = 5 Group + individual = 19	Face to face = 11 Remote = 3 Face to face + remote = 17	27.5	3.96	66
ACHIEVE41	G,I	F	30	x	80
ADAPT42	G,I	F,R	33	x	64
ALIFE@WORK20	I	R	10	0	100
BE-WELL21	G,I	F,R	18	x	83
CLIP43	G,I	F,R	36	x	67
Da Qing19	G,I	F	16	4	80
DPP31	G, I	F,R	22	12	73
EDIPS-Newcastle44	G,I	F	8	x	75
E-LITE45	G,I	F,R	38	x	61
HEALTH TRACK32	I	F,R	6	6	50
HCP22	I	F	12	4	75
IDEA46	G,I	F,R	39	x	62
IDPP-147	I	F,R	15	14	53
LEAN23	I	F,R	11	x	100
LISA48	I	R	31	4	87
Look AHEAD29	G,I	F,R	42	24	57
NEW49	G,I	F,R	32	x	63
ORBIT28	G,I	F,R	110	x	56
Patrick50	I	R	52	x	50
PODOSA51	G	F	7	4	71
POWER18	G,I	F	39	18	77
SLIM52	G,I	F,R	5	4	60
STRIDE53	G,I	F,R	36	x	67
Swedish Bjorknas54	G	F	12	5	58
TAIM55	G,I	F	17	8	71
TOHP I56	G,I	F,R	26	x	77
TOHP II57	G,I	F,R	28	x	68
TONE30	G,I	F	28	12	71
Trento24	G	F	4	4	50
Villareal58	G	F	52	x	50
WOMAN59	G	F	40	12	50

The type of contact refers to whether trial participants received individual (I) or group (G), and mode of contact outlines whether participants received interventions remotely by internet, email or over the phone (R) or face to face (F).