This geographically based, systematically ascertained study of some 28 000 patient-years of essentially untreated multiple sclerosis completes our assessment of the relationship of relapses to hard long-term outcome measures.
Because smoking has been shown to influence NAA/Cr levels regardless of alcohol consumption [ 23- 25, 35], we ascertained study participants who were non-smokers to avoid any additional effect of smoking on this investigation.
A systematic review process was adopted in ascertaining studies, thereby avoiding selection bias.
While the Cochrane Collaboration has stated that quality scales and scale scores are inappropriate means of ascertaining study quality, 33 our results are relevant because many researchers continue to use the Jadad Scale and NOS in their systematic reviews.
We applied the nested case-control design to ascertain study subjects and two control groups from the healthy population, investigating the high-order interaction of risk factors on steatohepatitis.
When possible, sub-studies utilize commonly defined variables to assess patient demographic variables and comorbid conditions ascertained at studies' baseline.
BO ascertained the studies and extracted the data.
In each trial, physicians and nurses ascertained that study patients were deeply sedated (with no response to glabellar tap) before initiating the study infusion.
In mudrocks, fabrics can be ascertained by studying the platelike arrangement of mica and clay minerals.
The analogous trends were ascertained on studying the polyplex solutions.
Body mass index (BMI) was calculated from height and weight ascertained at study enrollment.
