Thesiss

The use of tobacco products ruins the health of millions of people around the world. On average, tobacco users die nearly seven years earlier than non-tobacco users. n1 Cigarette smoking is a particular concern in the developing countries of the Middle East and Gulf Cooperation …

Randomized trials are the gold standard for assessing causal relationships between an intervention and a clinical outcome. The challenge with randomized trials is that they are very expensive to perform, often take place at different times and locations, take many years to compl…