What is smr test?

The SMR test, or Standardized Mortality Ratio test, is a statistical measure used to compare the observed number of deaths in a study population to the expected number of deaths based on a larger reference population. It helps assess the health status of a specific group by determining whether their mortality rates are higher or lower than those of the general population. An SMR greater than 1 indicates higher mortality, while an SMR less than 1 suggests lower mortality. This test is commonly used in epidemiology and public health research.