However, greater scrutiny revealed that its size (roughly 2.4 times larger) posed problems for scientists who have not ascertained whether it is rocky or gaseous.
Ambulatory status for excluded patients was not ascertained, but assuming that all the sedated patients were non-ambulatory, inclusion of this cohort might change the odds ratio and this association.
To be consistent with notation used throughout this work, from this point forward we label the Taiwanese samples as "controls" and the Caucasian samples as "cases", although individuals in this study were not ascertained for any particular disease phenotype.
The reasons for non-participation were not ascertained.
GAC filter use at home was not ascertained for this population.
We excluded PAD and peripheral neuropathy from this analysis because these were not ascertained for all participants.
All-cause mortality was chosen as the primary endpoint of interest since the exact causes of death were not ascertained for each patient.
In addition, the analysis is limited to only a few key demographic variables (age at onset, race, and sex), as other key socioeconomic and clinical were not ascertained for all participants at study inception (8).
Furthermore, the patients who were randomized to LIRA in DURATION-6 had a forced titration to LIRA 1.8 mg, whereas the drug dose was not ascertained for this analysis.
However, that study was restricted to patients with at least 4 outpatient clinic visits in a 12-month period, and race/ethnicity was not ascertained for 21.4% of the patients in that study, leaving considerable potential for bias in these results.
