Table 1.

Demographics and incidence of brain tumours.

Age, years	Tumours, n	Malignant tumours, n	Females, n (%)	Person years in GPRD (n × 100 000)	Incidence of tumoursa	Incidence of malignant tumoursa
18–29	159	134	71 (45)	51.4	3.1	2.6
30–39	276	206	137 (50)	52.8	5.2	3.9
40–49	432	280	227 (53)	48.6	8.9	5.7
50–59	675	471	361 (53)	42.4	15.9	11.1
60–69	822	584	410 (50)	32.5	25.3	18.0
70–79	767	511	419 (55)	24.8	30.9	20.6
80–89	339	191	198 (58)	12.4	27.3	15.4
>90	35	20	21 (60)	2.4	14.6	8.3
Total	3505	2397	1844 (53)	267.3	13.1	9.0

GPRD = General Practice Research Database.

^aIncidence per 100 000 per year.