This book chapter presents the properties of the conditional indirect utility function corresponding to an expanded version of the goods/leisure trade-off model, which includes work and travel time as direct sources of ...

The risks associated with alcohol intoxication are rarely discussed during pre-travel counselling. However, alcohol immoderation abroad may increase the exposure to health risks. Few studies have addressed alcohol consumption ...

Background: In South America, little is known about sexual behavior and risk factors for acquiring sexually transmitted diseases (STDs) among travelers and among local people sexually interacting with travelers. There is ...

Background: Sexual behavior of travelers to Latin America and the sexual behavior of US travelers in general are poorly characterized. Goal: The goal of the study was to evaluate sexual risk factors of travelers to Peru. ...

We use state-of-the art estimation approaches to obtain mode-specific values of travel time savings (VTTS) based on pooled RP/SP travel choice data of Zurich workers. Unlike the large majority of time valuation studies, ...

Background Millions of travellers around the world have gathered together into online communities. The objective is to analyse the factors associated with risky sexual behaviour among travellers. Methods Cross-sectional ...

Activity and travel models share a common framework that cans for their joint estimation. This complex problem only recently has received attention in the literature. Explicit equations for travel choice and activity ...