Economies were ordered according to their Gross National Income (GNI) per capita for the data collection year used, according to the World Bank Atlas Methods [28] and grouped into four categories: low-income (US$9355 or less); lower middle-income (US$936 $3,7055); upper middle-income (US$3,706 $11,4555); and high income (US$11,4566 or more).
The data for Samoa were provided as per capita, and the data for Tonga were presented per household.
In addition, we obtained the per capita availability data from the USDA to determine the amount of each food commodity the average American consumes [ 25].
In the second cluster of countries, those with a low GDP per capita, the pattern of systematic decline of the Pm with lower GDP per capita no longer fits the data.
Finally, for the calculations required, the GDP per capita data of the World Bank is added to the base (Additional file 3).
In respect to the proportion of GDPHE given to cancer services, Wilking et al (2009) provide data as a percentage of GDPHE and direct cost per capita based upon 'price parity points' (PPP), that is, cost of comparable items in six European countries, in Euros, but for total per capita expenditure on health presented the data in dollars.
GDP, GNI per capita, THE% and LE data were obtained from the World Bank website (data.worldbank.org) for the years corresponding to the audit.
If such survey data is not available, the most convenient technique is to make a rough estimate using the per capita consumption data (described above).
The company analyzed Google Trends' per capita search data for some of the top 200 consumer brands and displayed the most popular company in each state.
But if, as the Nielsen/NetRatings per capita spending data suggests, shoppers are prepared to spend more aggressively, the 2002 holiday season could go down as a memorable one for e-tailers.
"Where it's extremely cold it's not uncommon for people to drink all day long," said Val Smith, president of International Wine and Spirits, which provided the data on per-capita alcohol consumption.
