Table 2

ORs for brain tumours with level of total cumulative specific radio frequency energy (total cumulative specific energy) (in joules per kilogram)*

	Subjects with tumour centre estimated by a neuroradiologist or computer algorithm^†			Only subjects with tumour centre estimated by a neuroradiologist
	Cases	Controls	OR (95% CI)	Cases	Controls	OR (95% CI)
Glioma
Never regular user	196	617	1.00	117	361	1.00
<76.7	67	265	0.76 (0.53 to 1.09)	36	150	0.84 (0.51 to 1.36)
76.7–	68	227	0.94 (0.66 to 1.35)	43	128	1.00 (0.62 to 1.60)
284.1–	60	207	0.80 (0.54 to 1.18)	39	102	1.15 (0.69 to 1.90)
978.9–	57	197	0.89 (0.61 to 1.30)	34	99	0.92 (0.55 to 1.53)
3123.9+	103	207	1.35 (0.96 to 1.90)	57	86	1.66 (1.03 to 2.67)
Meningioma
Never regular user	294	643	1.00	156	396	1.00
<76.7	103	261	0.90 (0.67 to 1.21)	51	150	0.86 (0.57 to 1.29)
76.7–	71	199	0.74 (0.53 to 1.04)	47	127	0.95 (0.62 to 1.44)
284.1–	56	233	0.56 (0.39 to 0.80)	29	136	0.53 (0.32 to 0.87)
978.9–	62	209	0.72 (0.51 to 1.02)	23	117	0.55 (0.32 to 0.93)
3123.9+	88	251	0.90 (0.66 to 1.24)	35	114	1.01 (0.63 to 1.62)

↵* Analyses based on unconditional logistic regression stratified on age, sex and region and adjusted for education and timing of interview.
↵† Centre is as estimated by a neuroradiologist when available or as estimated by computer algorithm otherwise.