In order to further meaningful comparative effectiveness research, we must understand the selectiveness of missing lab test results and how missingness may be related to study outcomes.
There has been much emphasis on the distinction of selective vs non-selective drugs and whether selectiveness will infer efficacy.
First, the number and selectiveness of drop-outs may have biased the results.
The country dummies are also a robustness check for whether the results are biased by variance in the selectiveness of the different national newspapers, such as could be expected for Austria.
Concern is often expressed at the low response rates for cohort studies, or the selectiveness of the group under study, and the generalisability of their results [ 17].
For this reason, in order not to spend too much running time on testing cases that would never be used anyway since the selectiveness is bad, we empirically chose a threshold factor τ = 0.08 for p/ L. This resulted in 198 combinations for q ranging from 4 to 14.
Overall, the level of invasion has a weak influence on pollination network structure and seems to be associated with only one metric, H 2 ′ which measures the level of selectiveness; thus, as invasion progresses, species in the network appear to become more selective in their choice of partners, interacting with less abundant species more than would be expected by chance.
Although it could be argued that this is due to an increasing quality of science, it is more likely attributable to the selectiveness of 'high impact' journals that, in our opinion, might as well have a bold statement in the submission form: negative results are not accepted.
But conservative groups praise the stores' selectiveness.
Cornell's endowment has roughly doubled, to $2.9 billion, and its selectiveness has increased.
