Participants’ responses to prompted possible risk factors for CNS tumors.

Risk Factors	Method of administration
	Personal										Online N (%)
	SA		A		NS		D		SD		SA		A		NS		D		SD

	n	(%)	n	(%)	n	(%)	n	(%)	n	(%)	n	(%)	n	(%)	n	(%)	n	(%)	n	(%)
Radioactive location/occupation	716	47.7	487	32.5	231	15.4	53	3.53	12	0.8	1003	66.9	318	21.2	157	10.5	8	0.53	10	0.67
Frequent Exposure to Dental X-Rays	220	14.7	441	29.4	634	42.3	169	11.3	29	1.93	275	18.3	358	23.9	632	42.1	85	5.67	127	8.47
Exposure to CT Scans	240	16.0	463	30.9	579	38.6	182	12.1	28	1.87	291	19.4	396	26.4	612	40.8	66	4.40	118	7.78
Frequent Exposure BPA (Bisphenol A)	379	25.3	569	37.9	417	27.8	114	7.60	20	1.33	531	35.4	477	31.8	395	26.3	30	2.00	56	3.73
Exposure to Pesticides	392	26.1	633	42.2	342	22.8	110	7.33	21	1.40	618	41.2	474	31.6	327	21.8	28	1.87	44	2.93
Repetitive long period exposure to mobile phones	351	23.4	592	39.5	404	26.9	121	8.07	30	2.00	584	38.9	449	29.9	352	23.5	37	2.47	60	4.00
Low fruit and vegetable intake	84	5.60	212	14.1	467	31.1	531	35.4	202	13.5	91	6.07	373	24.9	587	39.1	116	7.73	251	16.7
Red/processed meat	60	4.00	168	11.2	530	35.3	577	38.5	163	10.9	84	5.60	338	22.5	633	42.2	136	9.07	251	16.7
Overweight (BMI over 25)	102	6.80	227	15.1	535	35.7	516	34.4	112	7.47	199	13.3	410	27.3	545	36.3	113	7.53	201	13.4
Over 70 years of age	120	8.00	289	19.3	472	31.5	480	32.0	132	8.80	244	16.3	416	27.7	523	34.9	106	7.07	169	11.3
Close relative with CNST	214	14.3	363	24.2	326	21.7	411	27.4	182	12.1	389	25.9	488	32.5	314	20.9	87	5.80	159	10.6
Infection	67	4.47	113	7.53	283	18.9	556	37.1	474	31.6	91	6.07	309	20.6	413	27.5	134	8.93	321	21.4
Low physical activity	87	5.80	130	8.67	414	27.6	569	37.9	300	20.0	154	10.3	366	24.4	517	34.5	112	7.47	241	16.1

A - strongly agree, A - agree, NS - not sure, D - disagree, SD - strongly disagree, BMI - body mass index, CNST - central nervous system tumor