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.
Campeche, estado (state), southeastern Mexico, on the western part of the YucatÃ¡n Peninsula. It is bounded to the north and east by the state of YucatÃ¡n, to the east by the state of Quintana Roo, to the south by Guatemala, to the southwest by the state of Tabasco, and to the west by the Bay of Campeche, an inlet of the Gulf of Mexico.