Investopedia / Mira Norian A lapse ratio, or expiration ratio, is a measure of the number of policies issued by an insurance company that are not renewed compared to the number of policies that ...

The prime method used for data reduction ... raw, measured and background-corrected X-ray intensities for an element in an unknown sample, I unk , against that of a standard, I std, with a known ...

Urea reduction ratio was a predictor of skeletal muscle mass index. Higher urea reduction ratio percentages correlated with lower skeletal muscle mass index values. Urea reduction ratio — a ...