Table 1.

Description of the PICO strategy.

PICO Acronym Criteria	PICO Items Relevant to Eligibility Criteria
(P) Population	Children with overweight or obesity as defined by WHO growth charts, CDC growth charts, IOTF cut-offs or any official national growth chart
(I) Intervention	LGI or LGL diet
(C) Comparator	Any dietary intervention
(O) Outcomes	BW, BMI, BMI z-score, WC, FM, F%, FBG, Fins, HOMA-IR, TC, LDL-c, HDL-c, TG, SBP, DBP

BMI: body mass index; BW: body weight; CDC: Centers for Disease Control and Prevention; DBP: diastolic blood pressure; F%: percentage of fat; FBG: fasting blood glucose; Fins: fasting insulin; FM: fat mass; HDL-c: high density lipoprotein cholesterol; HOMA-IR: homeostasis model assessment—insulin resistance; IOTF: International Obesity Task Force; LDL-c: low density lipoprotein cholesterol; LGI: low glycemic index; LGL: low glycemic load; SBP: systolic blood pressure; TC: total cholesterol; TG: triglycerides; WC: waist circumference; WHO: World Health Organization.