Whilst we are cautious about making firm conclusions about the similarities and differences of countries from the pilot data because of the different questions used in some cases, we have employed a statistically conservative approach to analysing across the countries in order to look for general patterns. We have used an approach that looks at the average scores for each country, and then groups the countries according to whether or not their results are significantly different. This approach does not in any way correct for the variation in questions asked, but on the assumption that they are largely equivalent, it.
