Table 3.

Change in distribution of results and usefulness of EEG from retrospective audit (6 months) to prospective audit (6 months). Figures are number (percentage) of procedures

	Retrospective (n=368)	Prospective (n=241)
Diagnosis
Normal	190 (51.6)	134 (55.6)
Non-specific abnormality	88 (23.9)	36 (14.9)
Epileptiform discharges	40 (10.9)	42 (17.5)
Miscellaneous abnormalities	50 (13.6)	29 (12.0)
Usefulness
Influenced management	59 (16.0)	70 (29.0)
Justifiable	104 (28.3)	86 (35.7)
Inappropriate	205 (55.7)	85 (35.3)