Table 2.

Headache years and number of GP visits before referral

	Northampton	York	Ashford	NHNN
Duration of headache problem before referral (years)	n=44 (2)	n=43 (0)	n=75 (5)	n=40 (0)
	8.6±8.8	10.3±14.1	6.4±9.6	15.4±13.5
Mean number of visits to GP before referral	n=41 (5)	n=39 (3)	n=59 (22)	n=35 (7)
	11.3±11.2	8.53±8.7	9.3±15.3	14.8±9.4
	Mode=10	Mode=8.7	Mode=3	Mode=10

The number of patients who did not provide data is shown in brackets.

NHNN=National Hospital for Neurology and Neurosurgery.