Why the study?
Has the mortality rate associated with anaesthesia decreased over a 13-year period in Massachusetts?
Has the mortality rate associated with anaesthesia decreased over a 13-year period in Massachusetts?
Mortality associated with both general and spinal anaesthesia appears to have decreased substantially over a 13-year period in Massachusetts.
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Mortality after anaesthesia may have declined in Massachusetts; leaves open generalizability and causal factors beyond this cohort.
This paper compares mortality associated with anaesthesia in Massachusetts USA, during two periods of time separated by 13 years. The denominators in the calculation of the mortality rates are not precisely comparable but there appears to be approximately a thirteenfold decrease in the death rate after general anaesthesia and a tenfold decrease after spinal anaesthesia.
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Gerald L. Zeitlin (1989) studied this question.
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