The effect of a brief social intervention on the examination results of UK medical students: a cluster randomised controlled trial

Table 1 Reliability of the March 2007 and August 2007 generic and module-specific extended matching questions (EMQ) and single best answer (SBA) written examinations, calculated using the Kuder Richardson Formula (KR20)

Examination subject	Date	Format	Reliability (KR20)
Generic clinical knowledge	March	EMQ	0.758
	August	EMQ	0.730
Care of the Elderly and	March	SBA	0.760
General Medical Specialties	August	SBA	0.757
General Medicine, Medicine in the Community and Surgery	March	SBA	0.760
	August	SBA	0.705

ISSN: 1472-6920