Please select the eligibility criteria that correspond to the clinical trial below.
Title: Enhancing Adherence to an Internet-Mediated Walking Program by Building Online Communities
Brief Summary: The purpose of this study is to determine whether online peer support will increase adherence to an internet-based pedometer walking program.


Options:
A: Inclusion Criteria:

* Must have one or more of the following: Coronary artery disease (CAD); BMI 25 or higher; Type 2 diabetes
* Must be sedentary, defined by less than 150 minutes of self-reported activity per week
* Must be 18 or older
* Must have access to a computer with an Internet connection, a USB port, and Windows 2000 (latest service pack), XP or Vista
* Must be a regular email user (checking weekly)
* Must be able to communicate in English

Exclusion Criteria:

* Pregnant
* Cannot walk a block (self-report)
* Not competent to sign consent
* Unable to obtain medical clearance from a treating physician (primary care, cardiologist, endocrinologist)
* Type 1 diabetes
B: Inclusion Criteria:

* Currently a patient at the General Internal Medicine Clinic at the University of North Carolina at Chapel Hill
* Moderate (6% to 20%) or high (greater than 20%) risk of CHD, as defined by current evidence and practice-based guidelines for aspirin use and cholesterol levels

Exclusion Criteria:

* Known cardiovascular disease (e.g., previous heart attack, previous coronary artery bypass graft or percutaneous coronary intervention, angina, previous transient ischemic attack \[TIA\] or stroke, peripheral vascular disease, congestive heart failure)
* Diabetes
* Low global risk of CHD (less than 6%)
* Dementia or other severe cognitive dysfunction
* Blindness
* Serious medical illness that would make the individual a poor candidate for the study (e.g., kidney failure, liver cirrhosis, HIV, non-skin cancer, any other illness for which their life expectancy is projected at less than 5 years)
* Inability to speak and understand English
* Participation in the preliminary study or in cognitive testing of intervention components
C: Inclusion Criteria:

* Age 20 to 80 years
* English Proficiency
* Internet Access (home or work)
* Documented CAD (most recent cardiac diagnosis); documented Myocardial Infarction (MI), successful PCI procedure

Exclusion Criteria:

* Patient intends to enroll in structured cardiac rehabilitation
* Hospitalization for Coronary Artery Bypass (CABG)
* Hospitalization for diagnostic procedure not associated with previously documented MI
* Patient coming back to hospital for planned staged PCI within 6 months
* Cardiac transplantation
* Presence of, or hospitalization for defibrillator implant
* Hospitalization for pacemaker implantation
* Unresolved unstable angina \&/or hospitalization for angina (without MI or PCI)
* Uncontrolled arrhythmias causing symptoms or hemodynamic compromise
* Neuromuscular, musculoskeletal or rheumatoid disorders that are exacerbated by exercise
* Other uncontrolled metabolic conditions (e.g. diabetes)
* Chronic infectious diseases such as mononucleosis, hepatitis, AIDS
* Acute systematic illness or fever
* Uncontrolled tachycardia (\<120 bpm)
* Uncompensated congestive heart failure (\&/or NYHA Class III, or IV)
* 3rd degree AV block without pacemaker
* Active pericarditis or myocarditis
* Recent embolism
* Suspected or known AAA aneurysm \> 4cm
* Uncontrolled hypertension (SBP \> 200; DBP \> 110)
* Pregnancy
D: Patient Eligibility criteria

Inclusion Criteria:

* Patients with thoracic pain who the emergency department physician suspects of ACS and plans start a treatment for this issue

Exclusion Criteria:

* Patients transferred from others institutions within 12 hours of the symptoms

Cluster Eligibility Criteria

* National Public Hospitals with emergency department. A cluster can be one hospital with emergency department, or 2 or more hospitals (for example: 1 emergency hospital and 1 general hospital which receive the patients to perform PCI).

Answer: A