Sleep related groaning, also called catathrenia, causes you to groan vocally while you sleep. Sleep related groaning is a long-lasting disorder that often occurs nightly. The groaning sound is usually quite loud. Your breathing becomes unusually slow during a groaning episode. You take in a slow, deep breath.
The Gini coefficient (or Gini ratio) is a summary statistic of the Lorenz curve and a measure of inequality in a population.he Gini coefficient (or Gini ratio) is a summary statistic of the Lorenz curve and a measure of inequality in a population.
A coefficient is the impact of an independent variable for a unit increase in that variable, while the corresponding number under bStdX is the impact of the covariate for a standard deviation increase in that variable. For example, the x-standardized coefficient of education is .2331 (=.0907*2.5697).