The outcomes in the monitor areas represent annual numbers of individuals who failed to return for an outpatient visit within 30 days of discharge, out of the total number of annual discharges. Monitor 21 here is in the Substance Abuse Psychiatric care. This subsample of a much larger data sets provides information on years 1992 and 1993 for the 159 hospitals in the VA system. This plays the role of a covariate in models for the outcomes.
Interest lies in the relationship of pollutant levels to one or more meteorological variables.
This data arises in investigations of the fundamental stochastic nature of electro-physiological communication in nervous systems, at the subcellular level. These data come from one of many similar experiments in the Duke Medical Center and Durham VA Neurosurgery departments. Here is a long series of 3600 EEG recordings from a long EEG trace recorded in the ECT Lab at Duke, on a patient undergoing ECT therapy for clinical depression. Here is a short segment of only 400 observations from the central section of the EEG series. They are measured in microvolts and represent measurments taken at time intervals of roughly one fortieth of a second.