Item 16. Methods: Sub-group analyses.

Any a priori sub-group analyses (e.g. between different sites in a multicentre study, different clinical or demographic populations), and sub-groups recruited to specific nested research tasks

Example - Subgroups

Planned subgroup analyses focus on subgroups of young women. Age is a core issue in gender violence and HIV incidence. … A further subgroup analysis will examine the effect of the presence of other programmes for HIV prevention, youth empowerment and reduction in gender violence active in the clusters, with this information collected at the time of the impact survey77

Explanation Subgroups should be specified a priori and the method of subgroup analysis clearly specified. Further detail on reporting analysis of data from subgroups is available in design-specific reporting standards.27–29 31 75