From the parmacoepi point of view, the best risk estimator is the relative risk (RR, event rate in exposed/event rate in non-exposed). This cannot be measured in case-controls studies, because the cases and the controls are independent, and the overall event rates are fixed by the cas/control ratio.
Bay of Campeche. Bay of Campeche, also called Gulf of Campeche, Spanish BahÃ­a de Campeche, bay of the Gulf of Mexico, southern Mexico. It is bounded by the YucatÃ¡n Peninsula to the east, by the Isthmus of Tehuantepec to the south, and by southern Veracruz to the west.
A great indentation of the Atlantic Ocean, the Gulf of Mexico is almost completely surrounded by the United States and Mexico. In the 450-mile (720-kilometer) stretch between Yucatan and Florida are the Yucatan Channel, the northwestern coast of Cuba, and the Straits of Florida.