Table VI.

Strength evidence

A) Outcome measure	B) Studies	C) 6–8 months		D) 12 months		E) 24 months		F) Level of evidence at
		FC	NC	FC	NC	FC	NC	6 months	12–24 months
Total energy intake	2	Van der Veen [23]			Van der Veen [23]		Logue [26]	Limited, FC	Limited, NC
Total fat intake	2	Van der Veen [23]		Van der Veen [23], Steptoe [20]				Limited, FC	Limited, FC
Saturated fat intake	1	Van der Veen [23]			Van der Veen [23]			Limited, FC	Limited, NC
Monounsaturated fat intake	1	Van der Veen [23]		Van der Veen [23]				Limited, FC	Limited, FC
Unsaturated fat intake	1		Van der Veen [23]		Van der Veen [23]			Limited, NC	Limited, NC
Weight	3	Van der Veen [23]			Van der Veen [23], Steptoe [20]		Logue [26]	Limited, FC	Moderate, NC
BMI	3	Van der Veen [23]	Verheijden [25]		Van der Veen [23], Steptoe [20]			Conflicting	Limited, NC
Systolic blood pressure	2		Verheijden [25]	Steptoe [20]				Limited, NC	Limited, FC
Diastolic blood pressure	2		Verheijden [25]		Steptoe [20]			Limited, NC	Limited, NC
Blood pressure	1						Logue [26]	No RCTs	Limited, NC
Waist circumference or waist-to-hip ratio	3		Van der Veen [23], Verheijden [25]		Van der Veen [23]		Logue [26]	Limited, NC	Limited, NC
Lipid values	4	Van der Veen [23]	Verheijden [25]		Van der Veen [23], Steptoe [20]		Logue [26]	Conflicting	Moderate, NC
Early weight loss and regain	1						Logue [26]	No RCTs	Limited, NC
Distribution across SOC	2	Verheijden [24]	Verheijden [25]		Verheijden [24]			Conflicting	Limited, NC
Movement across SOC	3	Verheijden [24]		Steptoe [22]	Keller [21], Verheijden [24]			Limited, FC	Conflicting

A) outcome measures assessed; B) number of studies assessing a particular outcome; C–E) results of the trials; F) defined level of evidence. FC = favorable change; NC = no significant change.