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Comparing data across different countries can be awkward. There are differing methodologies and ways of doing things. You have to do a lot of ground work to agree a lot of details before you can be sure that you are making valid comparisons.

Comparing data across different countries can be awkward. There are differing methodologies and ways of doing things. You have to do a lot of ground work to agree a lot of details before you can be sure that you are making valid comparisons.

Comparing data across different countries can be awkward. There are differing methodologies and ways of doing things. You have to do a lot of ground work to agree a lot of details before you can be sure that you are making valid comparisons.