Table 2.

Validation of shoulder dislocations coded within the CPRD dataset: responses to GP questionnaires (n=95*)

	n	%
GP confirmation of shoulder dislocation	85	89
Patients who had a confirmed ‘primary’ shoulder dislocation	72	76
Patients who had a further dislocation within 2 yearsof the primary dislocation†	27	32
Confirmation that this was a further dislocation episode and not a review of the problem	21	78
Patients with further dislocations that have notbeen coded within CPRD†	9	11

*An additional two questionnaires were received from GPs stating that the patient had transferred out of the practice and that no data were available for them. We have omitted these two patients from the denominator used for this table.

†The denominator is 85 because these patients were confirmed to have had a shoulder dislocation and could then potentially have a redislocation.

CPRD, Clinical Practice Research Datalink; GP, general practitioner.