Within the multiple-site studies listed, >60 sites were also examined individually, but no significant excess was detected.
Since then, several multiple-site studies have found evidence that temperature and air pollutants interacted to impact human health but the nature and magnitude of such an interaction varied with geographic area [ 79- 82].
However, such analyses should be viewed as multiple-site studies, with all the concerns of individual site studies as well as issues of diagnostic consistency across sites, type and amount of data recorded, as well as representativeness of the cases to the base populations.
A multiple site case study was conducted at 6 health centres in the district of Djibo in Burkina Faso.
Future studies should include larger samples including multiple sites, controlled study designs, and standardized error and severity reporting.
When more than two grazing intensities were reported in a study, all pairwise comparisons were included as separate data points, as were multiple sites per study (whenever reported separately).
With multiple sites under study, these approaches might result in different or multiple distinct groups.
Analyzing data from multiple sites makes these studies more complex, and Dr. Wu credits her team at Duke with helping her manage everything.
DESIGN, SETTING, AND PARTICIPANTS The Alzheimer Disease Genetics Consortium comprises 14 case-control, prospective, and family-based data sets with data on 9162 participants of white race/ethnicity with Alzheimer disease occurring after age 60 years who also had complete AAO information, gathered between 1989 and 2011 at multiple sites by participating studies.
Multiple site-directed mutagenesis studies confirmed the importance of these two H-bonds in maintaining the high reduction potential of Rieske proteins.
