Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Double Blind Randomized Placebo Controlled Study, for Smoking Cessation in Preadmission Clinic. the Use of a Teachable Moment
Brief Summary: This study is a randomized, double-blind, placebo-controlled clinical trial which evaluates the efficacy of preoperative smoking counseling and varenicline (a medication approved by Health Canada and FDA for quitting smoking) to provide long term smoking cessation (i.e., abstinence for at least one year) in surgical patients.

The primary hypothesis is as follows: "A significant percentage of surgical patients will be receptive to smoking cessation interventions in the pre-admission clinic and will refrain from smoking at 24 and 52 weeks after starting the treatment." The secondary hypothesis is as follows: "Patients who receive interventions but do not quit smoking will have reduced number of cigarettes consumed/day or improved their readiness to quit smoking at 24 and 52 weeks after starting the treatment."


Options:
A: Inclusion Criteria:

* Have a diagnosis (using the SCID-I/P at screening visit) of schizophrenia or schizoaffective disorder and judged to be stable (without hospitalization or acute exacerbation and functioning in society) on psychiatric treatment for at least the past 6 month.
* Current cigarette smokers (at least 15/day during the past year with no period of abstinence greater than 3 months in the past year) male or female, between the ages of 18 and 75 inclusive, who are motivated to stop smoking.
* Score 7 or higher on the Contemplation Ladder at the Screening, Week -1, and Baseline Visits.

Exclusion Criteria:

* PANSS score \>70 at Screen or Baseline Visit.
* Subjects hospitalized within the past six months due to suicidal ideation or suicidal behavior or subjects considered to have serious suicidal ideation or suicidal behavior within the past six moth.
* Subjects having active suicidal ideation or behavior identified at Screen, Week -1, or Baseline Visit.
* Subjects taking Bupropion.
B: Inclusion Criteria:

* Male or female subjects, 18-75 years old
* Diagnosis of schizophrenia or schizoaffective disorder based on Diagnostic and Statistical Manual of Mental Disorders IV (DSM-IV) criteria
* Smoking at least 10 cigarettes per day
* Weight of at least 100 lbs (45.4 kg)
* Motivation to quit smoking
* Stabilized psychotic symptoms
* Provision of informed consent for testing and treatment

Exclusion Criteria:

* Serious cardiac, renal, hypertensive, pulmonary, endocrine, or neurologic disorder
* Seizure disorder, recent withdrawal from alcohol or anxiolytics
* History of bulimia nervosa, anorexia nervosa, or dementia
* History of depression, panic, or bipolar disorders
* Pregnancy or lactation
* Prior use of varenicline or bupropion HCl within three months prior to initiation of the study
* Current use of other smoking cessation treatments
* Regular use of non-cigarette tobacco products (\> than once/week)
* Past substance abuse (alcohol or non-nicotine containing drugs) in the preceding 6 months
* Patients with suicidal ideations or plans
* Florid psychosis or increasing psychosis following varenicline or bupropion HCl treatment
* History of, or current, alcohol dependence/abuse
* Current use of monoamine oxidase inhibitors (MAOI)
C: Inclusion Criteria:

* patients who are assessed in pre-admission clinic and scheduled for elective surgical procedures within the next 8 to 30 days
* patients should be over 18 yrs of age
* patients should have smoked an average 10 cigarettes/day or more during the previous year and had no period of smoking abstinence longer than 3 months in the past year

Exclusion Criteria:

* current pregnancy (or willingness to be pregnant within the next year after the start of the medication)
* current breastfeeding
* major depression, panic disorder, psychosis, or bipolar disorder within the prior year
* use of nicotine replacement or bupropion within the previous 3 months cardiovascular disease within the past 6 months
* a serious or unstable disease within the past 6 months
* drug or alcohol abuse or dependence within the past year
* use of tobacco products other than cigarettes or marijuana use within the previous month
* participating in any other studies
* patients who cannot understand English or have any form of cognitive impairment
D: Inclusion Criteria:

* Outpatients over the legal age smoking at least 10 cigarettes per day for at least 2 months

Exclusion Criteria:

* Insufficient level of motivation
* Another participant in the household
* Patients with current psychotic disorder or major depressive disorder

The investigator will evaluate whether there are other reasons why a patient may not participate.

Answer: C