Chen 2015.

Methods	Type of trial: effectiveness Allocation: cluster‐randomised Intervention model: parallel assignment Masking: −
Participants	Estimated number of schools: 12 to 16 schools per centre Estimated number of students: 70,000 Inclusion criteria (schools): schools in Liaoning, Tianjin, Ningxia, Shanghai, Chongqing, Hunan, and Guangdong Exclusion criteria (schools): − Inclusion criteria (students): students aged 7 to 18 years Exclusion criteria (students): students in the last year of primary and secondary school (Grades 6, 9, and 12) were not contacted due to their study load
Interventions	Intervention: Health Lifestyles Intervention is a multi‐component school‐based and family‐involved scheme that takes place over 9 months and aims to deliver a generally healthy lifestyle message encouraging health energy balance. Four components include:  Creating a supportive school and family environment, including learning about what is known about obstacles and success factors that influence the development and implementation of these programmes for the target group, setting the foundation for successful delivery of subsequent components; Educational strategies involving health education lessons and related compulsory activities towards children and parents; School physical education; and Based on monitoring and instruction of obesity‐related behaviours  Comparator: usual health practice
Outcomes	Primary outcome: change in prevalence of overweight and obesity Secondary outcomes  Anthropometric outcomes: waist circumference, hip circumference, blood pressure, skin fold thickness Behavioural outcomes: dietary, sedentary, or PA behaviours and their determinants (e.g. child or parental knowledge, beliefs, and attitudes; parental BMI, PA, and eating behaviours; school environment) Blood chemical outcomes: fasting plasma glucose, fasting triglycerides, total cholesterol, high‐density lipoprotein cholesterol (HDL‐C), low‐density lipoprotein cholesterol (LDL‐C) Physical fitness outcomes: standing‐board jump, 50‐metre speed run, 50 meters × 8 shuttle run (primary students), and run of 800/1000 metres (secondary school students) Other outcomes: process evaluation Relevant proposed outcome measures for SoF table: physical activity duration, sedentary time, BMI, fitness
Reason for awaiting classification	Marked as 'completed' in ClinicalTrials.gov, but no publication available
Stated aim of study	Quote: "the aim of this multi‐centred cluster randomised controlled trial (RCT) is to determine the effectiveness and cost‐effectiveness of the Health Lifestyles Interventions in preventing overweight and obesity in Chinese school children and adolescents"
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