Connecting environmental conditions and health problems can be difficult. Health data alone will provide only a little piece of information about how an illness may be related to environmental hazards or exposures. First, the way data are collected and presented might affect estimates and comparisons. For example, most parish and ZIP code maps and tables are based only on a person's address. This information tells very little about how a person may have come in contact with environmental hazards. Second, many diseases, like cancer, take a long time to develop, so, exposures that occurred many years before would likely be more relative to the disease. Those exposures might not be related to a person's residence when they are diagnosed with a disease. There are additional, similar considerations with all health data. Limitations of each health indicator are presented here for each topic under "About Data" and can be referenced to understand, use and cite the data.
The Louisiana EPHT provides data for the following health indicators: