Data Analysis

How will the data be analysed?

The primary outcomes will be national Key Stage test performance (average or total point scores across domains), based on the number of children in the study cohort born in each year between 1992-2008.  Performance at each Key Stage level will be compared between the ART group and each control group (naturally conceived siblings and unrelated matched controls). Each group will allow control for different factors that can influence educational performance (e.g. parenting and family socio-economic status, as well as schooling).