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.
Gulf of Mexico is an ocean basin in North America. It has to its  Northeast, North and Northwest the coastal area of USA and to its  Southwest and South it has Mexico. To it â¦ s Southeast is Cuba.  American states of Texas, Mississippi Louisiana, Florida and  Alabama border the gulf.he Gulf of Mexico is that body of water contained by Florida, Alabama, Mississipi, Louisiana, Texas, Mexico and part of Cuba.