The epidemiology of hepatic TB was evaluated by abstracting the year of the study, geographic location, proportion of male patients, and mean age of cases.
The following information was collected from published statistical data sources: geographic information, proportion of unmarried individuals, widowed spouses, divorcees, nuclear families, the unemployed, individuals in the labor force, and the annual population turnover in the regions.
For each geographic area, the proportion of eligible patients receiving care according to treatment guidelines, with 95% confidence intervals, was estimated.
This control group was constituted of non-related subjects who were matched to the case group for sex proportion, geographic origin, and age range.
In skunks, for models computed either with all individuals or with females only, genetic distance increased with geographic distance and proportion of agricultural fields, but decreased as the amount of forest edges increased in the landscape (Table 3).
Using ArcGIS 9.3 (ESRI, Redlands, CA), we generated 5,293 geographic coordinates in proportion to the population density in each of the 383 grid cells, resulting in 1 to 242 coordinates per grid cell.
To determine the extent of geographic variation in the proportion of patients with newly diagnosed open-angle glaucoma (OAG) undergoing visual field (VF) testing, fundus photography (FP), and other ocular imaging (OOI) among patients residing in different US communities.
Interestingly, calculating geographic range as the proportion of total available marine sedimentary cover occupied by a genus in North America shows a stronger area-environment relationship than the convex hull method.
Calculating geographic range as a proportion of available area accounts for the temporal variation in the areal extent of sedimentary rocks preserved in the geologic record and real changes in marine shelf area [31], [32], [47].
Although future research is needed to understand both the sampling and biological implications of a spatially heterogenous stratigraphic record, the methodology of computing geographic ranges as the proportion of available area occupied by a genus produces qualitatively similar geographic ranges as the traditional convex hull method (Fig. S11A).
