Table 1. Presentation rate (per 100 person-months) before an intracranial tumour diagnosis from CPRD (1989–2006) and HES-linked registrations (1997–2006) in patients aged 0 to 24 years in England.

	Primary care presentations				Hospital presentations
					All admissions				Emergency only
	Count	Rate	Rate ratio*	95% CI	Count	Rate	Rate ratio*	95% CI	Count	Rate	Rate ratio*	95% CI
Supratentorial	382	9.8	1.00	reference	1,981	3.7	1.00	reference	951	1.8	1.00	reference
Midline	144	5.2	0.52	0.42 – 0.64	668	2.7	0.81	0.74 – 0.88	304	1.2	0.79	0.69 – 0.90
Cerebellum	85	4.4	0.47	0.37 – 0.59	967	3.5	0.84	0.77 – 0.91	623	2.3	1.10	0.99 – 1.22
Brainstem	47	4.8	0.48	0.35 – 0.64	585	3.2	0.80	0.73 – 0.88	352	1.9	0.98	0.87 – 1.11
Ventricles	14	11.5	1.12	0.62 – 1.85	227	5.4	1.29	1.12 – 1.48	105	2.5	1.24	1.01 – 1.51
Meninges	17	2.4	0.24	0.14 – 0.38	168	2.4	0.78	0.66 – 0.91	74	1.1	0.73	0.57 – 0.92
Cranial nerves	32	6.5	0.87	0.58 – 1.27	147	1.9	0.58	0.48 – 0.68	44	0.6	0.37	0.27 – 0.50
Other	234	5.0	0.49	0.42 – 0.58	2,230	3.5	0.91	0.85 – 0.96	1,187	1.8	1.00	0.92 – 1.09

^*Estimated rate ratios were adjusted for age and year of diagnosis.

CPRD = Clinical Practice Research Datalink, HES = Hospital Episode Statistics.