Tag: =: operator

Using SAS to estimate the link between ozone and asthma (and a neat trick)

While working at the Rutgers Robert Wood Johnson Medical School, I had access to data on over ten million visits to emergency departments in central New Jersey, including ICD-9 (International Classification of Disease – 9th edition) codes along with some patient demographic data. I also had the ozone level from […]

Using SAS to estimate the link between ozone and asthma (and a neat trick) was published on SAS Users.