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Interpreting the Outcomes of Automated Internet-Based Randomized Trials: 
Example of an International Smoking Cessation Study

Interpreting the Outcomes of Automated Internet-Based Randomized Trials: Example of an International Smoking Cessation Study

A d emographic questionnaire included age, gender, race/ethnicity, education, income, and marital status. A s moking questionnaire included age when the participant started smoking, age when smoking regularly, number of cigarettes per day, confidence in quitting, and smoking exposure. The Fagerström Test for Nicotine Dependence (FTND) [30] is a commonly used 6-item test of nicotine dependence, with a range from 0 to 10.

Yan Leykin, Adrian Aguilera, Leandro D Torres, Eliseo J Pérez-Stable, Ricardo F Muñoz

J Med Internet Res 2012;14(1):e5