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.
GDP is an accurate indication of an economy's size, while GDP per capita has a close correlation with the trend in living standards over time, and the GDP growth rate is probably the single best indicator of economic growth.rawbacks. Some criticisms of GDP as a measure of economic output are: 1  It does not account for the underground economy â GDP relies on official data, so it does not take into account the extent of the underground economy, which can be significant in some nations.