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. 2016 Feb 19;6(2):e009435. doi: 10.1136/bmjopen-2015-009435

TableĀ 1.

Criteria used to select schools

Criteria Defined by
Type of school Independent (fee paying), grammar (exam entry), comprehensive (open-access)
Socioeconomic profile of school Percentage of pupils with free school meals
Intake profile of school Ethnicity, gender and percentage of pupils with English as a second language
Geographic location of school North, east, south and west Birmingham, UK