Please select the eligibility criteria that correspond to the clinical trial below.
Title: Peer-Enhanced Intervention to Support Teen Weight Loss
Brief Summary: The purpose of this study is to determine whether adding a peer-based intervention based on an outward bound model is more effective than a standard behavioral weight intervention for helping adolescents lose weight.


Options:
A: Inclusion Criteria:

* Adolescents 13-16 years old
* 20-90% overweight with reference gender and age
* At least 1 parent who can participate
* English speaking
* Agree to study participation and random assignment
* Be available for long-term follow-up

Exclusion Criteria:

* Current involvement in another weight loss program
* Unable to adhere to prescribed dietary plan and physical activity due to medical condition
* Unable to understand intervention materials
* In treatment for or diagnosed with psychiatric disorder
B: Inclusion Criteria:

* Enrolled in grade 9 or 10
* BMI ≥ 85th percentile for age and gender
* Residing in predominately one household, with access to a working telephone
* Consumption of 12 fluid ounces sugar-sweetened beverages (including 100% fruit juices) per day

Exclusion Criteria:

* Sibling participating in the study
* Intention to change location of residence during the 2 years post-randomization
* Plans to be away from home for 5 weeks or longer during the study period
* Physician diagnosis of a major medical illness or eating disorder
* Chronic use of any medication that may affect body weight or composition
* Current smoking
* Physical, mental, or cognitive handicaps that prevent participation
C: Inclusion Criteria:

* child aged between 12.0 and 17.0 years,
* child BMI =/\> 98th percentile,
* first language is English (or fluent in English)
* parent/s willing to participate in the programme with their child
* completion of written informed consent and/or assent prior to any study-specific procedures

Exclusion Criteria:

* severe intellectual difficulties,
* obesity secondary to genetic condition,
* limitations to engaging in physical activity
* use of medication known to effect body weight;
* limitations to using a smartphone device
* known family issues that would affect general compliance and attendance at follow-up visits.
D: Inclusion Criteria:

* Age between 15 and 18 years (inclusive)
* Male or female of Chinese ethnicity
* Body mass index \>/= 95th percentile of Hong Kong local age- and sex-specific reference
* No major medical illness
* Not on any chronic medications
* Post-pubertal as ascertained by clinical assessment by endocrinologist
* Willingness to give written informed consent by participants and his/her parents/guardian

Exclusion criteria:

* Concurrent participation in any clinical trial, dietary intervention or weight loss program
* Concomitant intake of weight reducing agent
* Active and uncontrolled endocrine diseases including hypo- or hyperthyroidism, Cushing's syndrome, diabetes mellitus, etc.
* Significant renal impairment, defined as serum creatinine \>150 umol/L and/or estimated glomerular filtration rate \<60ml/min/1.73m2
* Significant liver impairment, defined as \>2 times upper limit of alanine aminotransferase and asparate aminotransferase levels
* Gastrointestinal problems that would prevent them from following the test diets
* Active malignant disease
* Pregnant or lactating
* Any medical illness or condition including known non-compliance, as judged by the investigators as ineligible to participate the study

Answer: A