RESULTS: A total of 2144 patients were reviewed, and 74 were found to have dural tears occurring during or before surgery. Incidental durotomy occurred at the time of surgery in 66 patients (3.1% overall incidence).Incidence varied according to the specific procedure performed but was highest in the group that underwent revision surgery.ncidental durotomy occurred at the time of surgery in 66 patients (3.1% overall incidence). Incidence varied according to the specific procedure performed but was highest in the group that underwent revision surgery.
âGDP is a flawed measure of human welfareâ. GDP has always been a measure of output, not of welfare. Using current prices, it measures the value of goods and services produced for final consumption, private and public, present and future.n a recent paper submitted as evidence to the LSEâs Growth Commission, I consider three common criticisms of GDP as a target of policy and explain why I think they are wrong (Oulton, 2012a): 1  The first criticism is that GDP is hopelessly flawed as a measure of human welfare.
The measure compares the actual GDP (output) of an economy and the potential GDP (efficient output). When the economy is running an output gap, either positive or negative, it is thought to be running at an inefficient rate as the economy is either overworking or underworking its resources.Economic theory suggests that positive output gap will lead to inflation as production and labor costs rise. RELATED TERMS.hen the economy is running an output gap, either positive or negative, it is thought to be running at an inefficient rate as the economy is either overworking or underworking its resources. Economic theory suggests that positive output gap will lead to inflation as production and labor costs rise. RELATED TERMS.