Please select the eligibility criteria that correspond to the clinical trial below.
Title: PREventive Care Infrastructure Based On Ubiquitous Sensing (PRECIOUS)
Brief Summary: The goal of the MI field test is to assess users' overall satisfaction, usability and acceptability of the PRECIOUS system, and to explore if MI in combination with gamification principles is a feasible solution to foster adherence to PRECIOUS system. Moreover, it is pursued to trigger behavior change and build up motivation to maintain sustained change towards healthy lifestyles. The field test at University Hospital Vall d'Hebron will be carried out with morbidly obese pre-diabetic patients. This pilot test will serve to explore users' acceptance of PRECIOUS system in an early stage of its development. Considering that this is a pilot test, feedback and outcomes obtained will serve to refine and adjust PRECIOUS system concept and architecture.


Options:
A: Inclusion Criteria:

* Aged 18-65
* BMI equal to or greater than 27 kg/m2
* Willing to commit the necessary time and effort to the study,
* Employed by a large employer in Leeds (and expects to continue to be employed there for the next 12 months),
* Able to read and write in English,
* Able to access the internet,
* Willing to be randomised to one of three groups.

Exclusion Criteria:

* Pregnant, planning a pregnancy within next 12 months, lactating
* Has had surgery for weight loss
* Taking the medication sertraline (due to associations with weight gain)
* Taking anti-obesity medications or medications for diabetes
B: Inclusion Criteria:

* All patients must be under the care of medical specialists who adheres to national guidelines for morbid obesity or pre-diabetic conditions.
* Age older than 18 years.
* Body max index (BMI): ≥ 30 mg/m2.
* Pre-diabetic condition following ADA criteria: fasting plasma glucose level from 5.6mmol/L (100 mg/dL) to 6.9mmol/L (125 mg/dL).
* Patients must be able to participate, understand and complete questionnaires in Spanish language.
* Patients must refer to be used to use multimedia platforms such as PDAs, tablets, laptops, smart phones or personal computers in a regular basis.

Exclusion Criteria:

* Any mental (e.g. cognitive impairment, severe psychopathology not stabilized) or physical condition that could interfere with the successful application of the research protocol.
* Patients will be recruited from specialist outpatient consultation at Vall d'Hebron Research Institute (VHIR). All patients must be under the care of specialists who adhere to national guidelines.
C: Inclusion Criteria:

* obesity, BMI \> P. 97 (Jenni et al., 2011) or overweight, BMI \>P.90, plus risk factors or co-morbidity
* ability and parent's permission to use pre-configured study smartphones handed out to the children
* readiness to use the personal smartphone number and to spend the sum allocated exclusively for the study SMS during the 6 months of intervention

Exclusion Criteria:

* major somatic or psychiatric disease without adequate treatment,
* weight-relevant medication (antiepileptic drugs, methylphenhydate and similar medication),
* inability or lack of parent's or caregivers' permission to use a study smartphone with a mobile phone contract,
* lack of informed consent from children and parents and
* undue consumption of the amount allocated for study SMS for non-study purposes,
* overuse of smartphone e.g. without night beak for at least 8 hours.
D: Inclusion Criteria:

* ages 21-65 years old
* Body Mass Index (BMI) 25-45 kg/m2
* interested in losing weight through dietary change
* current use of iPhone or Android smartphone
* current use of email address
* has daily access to a bathroom scale
* no recent weight loss (≥10 lbs) in the past 6 months
* able to read and write in English
* able to attend 3 in-person evaluation visits at Duke University in Durham, North Carolina over a 3-month period

Exclusion Criteria:

* current participation in another weight loss treatment
* currently pregnant or planning to become pregnant within study period, or \< 1 year post-partum
* history of cardiovascular event, eating disorder, diabetes mellitus, hypothyroidism, cancer, end stage renal disease
* current uncontrolled hypertension
* use of the MyFitnessPal app to track food in the past 6 months
* Former or planned bariatric surgery
* current use of medication (e.g., lithium, steroids, anti-psychotics)
* use of weight loss medication in past 6 months
* profound cognitive, developmental, or psychiatric disorders or recent hospitalization in a psychiatric facility

Answer: B