For the overall study sample, the largest proportion of Medicare-eligible veteran patients used primary care only in VA, but this proportion declined over time, from 51.7% in FY2001 to 40.9% in FY2004.
In each sub-location in the study area, a sample proportion to the total household size was sampled and interviewed.
Our study sample reflected the proportion of men and women in the national population of teachers within the public education system (64.7% women vs. 63.8% in the French public system [ 26]) but differed slightly with respect to age and grade level taught.
Our final study sample included large proportions of patients with favorable characteristics associated with increased allograft survival (e.g. recipients of live donor kidneys, patients with glomerular disease).
However, the age and gender distributions of the study sample, representing greater proportions of middle-aged and female horse owners, is similar to that in a previous study conducted by the Australian Horse Industry Council among its members [ 45], suggesting that the sample is representative of the Australian horse industry.
The weight for each normal, benign, LGIL and HGIL is the proportion it constitutes of the study sample, divided by the proportion it constitutes of successful HPV tests.
Our study sample included a similar proportion of males to these studies [ 8, 9].
Compared with the general Australian population of similar age (25 34 years) (Table 2), this study sample had a higher proportion of professionals and managers (18).
Our study sample had a higher proportion of women, older people and unemployed people compared to the Office for National Statistics demographic profiles for these areas.
In some of the countries (Australia, Canada, France, Russia, the Netherlands, and the USA), the study sample was a small proportion of the general birthing population.
