Please select the eligibility criteria that correspond to the clinical trial below.
Title: High Cessation Rates in Smokers Using Personal Vaporizers: A Prospective 6-month Pilot Study
Brief Summary: E-cigarettes are proving to be an attractive long-term alternative to conventional cigarettes. Although they may also help smokers to remain abstinent during their quit attempt, recent clinical trials with first generation e-cigarettes have shown only modest quit rates. Second generation devices may result in much higher quit rates. Their efficacy and safety in long-term smoking cessation and/or smoking reduction studies have never been investigated.

In this prospective proof-of-concept study we monitored modifications in smoking habits of 50 regular smokers (unwilling to quit) who were asked to switch to a second generation device focusing on smoking reduction and smoking abstinence. Study participants were invited to attend a total of five study visits: at baseline, week-4, week-8, week-12 and week-24. Product usage, number of cigarettes smoked, and exhaled carbon monoxide (eCO) levels were measured at each visit. Smoking reduction and abstinence rates were calculated. Adverse events and participants' opinions of these products were also reviewed.


Options:
A: Inclusion Criteria:

* Participants (N=1100) will be men and women 18 years of age and older, recruited from four acute inpatient psychiatry units at the Alta Bates Summit Medical Center - Herrick Campus, located in Berkeley, CA, one acute inpatient psychiatry unit at Langley Porter Psychiatric Institute, located in San Francisco, CA, and two acute inpatient psychiatry units at Stanford Hospital, located in Stanford, CA. Inclusion criteria are: smoking 5 or more cigarettes per day and at least 100 cigarettes in one's lifetime, no plan to relocate outside of the greater Bay Area in the next 18 months, and telephone access for scheduling follow-up assessments.

Exclusion Criteria:

* Study exclusion criteria are: dementia or other brain injury precluding ability to participate; non-English speaking; complete homelessness; pregnancy or breastfeeding, and active ulcer disease (PUD). The relationship between nicotine and ulcers is a theoretical concern and our approach to now exclude patients with active ulcer disease is conservative. There is no data to show NRT causes/worsens ulcers. Recruitment of acutely psychotic, manic, or hostile patients will be delayed until there is significant reduction of these symptoms and patients are able to consent to study participation. Threats of violence in particular are taken seriously, and patients will not be recruited if they may be a threat to study staff in the outpatient setting. At this point, non-English measurement and intervention materials are not available. Pregnant smokers will be referred out for more specialized behavioral treatments. Exclusionary criteria are purposefully minimal in order to maximize information about treating tobacco dependence in smokers in inpatient psychiatry. The study sample is anticipated to be diverse with respect to gender and ethnicity, educational and socioeconomic level, and psychiatric diagnoses.
B: Inclusion Criteria:Healthy smokers 18-60 years old, smoking ≥15 conventional cigarettes per day (cig/day) for at least 10 years were recruited using anti-smoking leaflets and by an approved kiosk located in the atrium of the university hospital (AOU 'Policlinico-V. Emanuele') promoting the smoking cessation services of the CPCT (Centro per la Prevenzione e Cura del Tabagismo, Università di Catania, Italy).

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Exclusion Criteria:history of alcohol and illicit drug use, major depression or other psychiatric conditions. We also excluded subjects who reported recent myocardial infarction, angina pectoris, essential hypertension (\>140mmHg systolic and/or \>90mmHg diastolic), diabetes mellitus, severe allergies, poorly controlled asthma or other airways diseases

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C: Inclusion Criteria:

* resident into the Abruzzo and Lazio Region
* aged between 30 and 75 years;
* smoker of e-cigarettes (inhaling at least 50 puffs per week) containing nicotine since six or more months (E-cigarettes only Group);
* smoker of at least one traditional cigarette per day since six or more months (Traditional cigarettes only Group);
* smoker of both electronic and traditional cigarettes (at least one per day) since six or more months (Mixed Group).

Exclusion Criteria:

* illicit drug use,
* breastfeeding or pregnancy,
* major depression or other psychiatric conditions,
* severe allergies,
* active antihypertensive medication,
* angina pectoris,
* past episodes of major cardiovascular diseases (myocardial infarction, stroke/TIA, congestive heart failure, COPD, cancer of the lung, esophagus, larynx, oral cavity, bladder, pancreas, kidney, stomach, cervix, and myeloid leukemia.
D: Inclusion Criteria:

* Age 21-65
* Smoke \>9 cigarettes per day for at least 1 year
* Smoke regular filtered cigarettes or machine-rolled cigarettes with a filter
* CO measurement \>9 ppm at baseline
* No serious quit attempt in the prior 1 month. This includes use of any FDA approved smoking cessation medication (varenicline, bupropion \[used specifically as a quitting aid\], patch, gum, lozenge, inhaler, and nasal spray) in the past 1 month as an indication of treatment seeking.
* Not planning to quit in the next 6 months
* Interested in reducing cigarette consumption
* Willing to attend visits weekly and monthly over a 9-month period (not planning to move, not planning extended vacation, no planned surgeries)
* Read and write in English
* Able to understand and consent

Exclusion Criteria:

* Pregnant and/or nursing women
* Unstable or significant medical condition in the past 12 months (Recent heart attack or some other heart conditions, stroke, severe angina including high blood pressure if systolic \>159 or diastolic \>99 observed during screening).
* Immune system disorders, respiratory diseases (exacerbations of asthma or COPD, require oxygen, require oral prednisone), kidney (dialysis) or liver diseases (cirrhosis), or any medical disorder/medication that may affect participant safety or biomarker data.
* Use of any non-cigarette nicotine delivery product (pipe, cigar, dip, chew, snus, hookah, ECIGs, strips, sticks) in the past 7 days
* Uncontrolled mental illness or substance abuse or inpatient treatment for these in the past 6 months
* History of difficulty providing or unwilling to provide blood samples (fainting, poor veins, anxiety)
* No surgery requiring general anesthesia in the past 6 weeks
* Use of an ECIG for 5 or more days in the past 28 days or any use in the past 7 days
* Use of marijuana or any illicit drug/prescription drugs for non-medical use daily/almost daily, or weekly in the past 3 months per NIDA Quick Screen
* Use of hand-rolled, roll your own cigarettes
* Known allergy to propylene glycol or vegetable glycerin
* Other member of household is currently participating/participated in the study

Answer: B