Published studies have evaluated the performance of direct testing with the above mentioned tests.
Wiese and his colleagues describe the damage done by hangovers — according to their figures, the cost to the U.S. economy, in absenteeism and poor job performance, is a hundred and forty-eight billion dollars a year (other estimates are far lower, but still substantial) — and they mention the tests with the airplane pilots, guaranteed to scare anyone.
The database and the various tests mentioned were done with the programme SPSS 12.0 (SPSS Inc, Chicago, USA).
As mentioned before, only five tests with sample size greater than 100 have been selected for this study.
With this addition, Childress said CrowdFlower is now taking a three-pronged approach to quality control, combining the automatic and human checks mentioned above with skill tests, as well as checks from the most reliable workers on a given job.
Sackett et al. mentioned that a test with a high specificity is useful for "ruling in" a disease if a person tests positive [ 23].
Involvement of husbands and awareness of the benefits of the test were mentioned, but with less emphasis than the above factors.
b) were possibly cost-effective but were unrealistic (e.g. where a non skilled operator was mentioned together with a test for which a highly skilled operator was needed).
The P-value is calculated by a permutation test as mentioned above, with the difference of randomly permuting the labels within each population independently, and using the statistic CCPmax instead of CCmax.
It is also important to mention that after the tests with carbonated brines, the limestone samples presented some visible dissolution on the surface, effect not perceived with the dolomite samples.
