Cancer prevalence is defined as the number of living people who have ever been diagnosed with cancer. It includes people diagnosed with cancer in the past as well those who were recently diagnosed. Cancer prevalence is determined by how often a cancer occurs (incidence) and by how long people normally live after diagnosis (survival). This means prevalence counts are highest for the most common cancers with the longest survival.
Trinidad is located in the Caribbean, surrounded by the Caribbean Sea and the Atlantic Ocean. Trinidad is an island popular to tourists and is found northeast of Venezuela.
(August 2009). Trinidad and Tobago on a world map. Trinidad (Spanish :  Trinity ) is the larger and more populous of the two major islands and numerous landforms which make up the island nation of Trinidad and Tobago.The island lies just 11 km (6.8 mi) off the northeastern coast of Venezuela and sits on the continental shelf of South America.rinidad (Spanish :  Trinity ) is the larger and more populous of the two major islands and numerous landforms which make up the island nation of Trinidad and Tobago.