This term means a monetary system where the government of a definite country standardizes
their economic unit of their account that is the currency, to be easily converted into fixed weight of gold and vice versa.
Other strengths
of the underpinning cohort study include high participation by midwifery
units and trusts in England; the minimisation
of selection bias through achievement
of a high response rate and absence
of self selection bias because
of non-consent; and the ability to compare groups that were similar in terms
of identified clinical risk.12 The
economic evaluation was conducted according to nationally agreed design and reporting guidelines.15 26 Collection
of primary
unit cost data was thorough and
accounted for regional differences in care patterns.