Table 2.

Description of cases and controls by BP use (note: few cases and controls had perio surgery, endo and implants)

		CASES				CONTROLS
		BP use				BP use
		None	Only oral	Any IV	All	None	Only Oral	Any IV	All
		N = 32 %	N = 57 %	N = 98 %	N = 187 %	N = 475 %	N = 79 %	N = 7 %	N = 561 %
Age	Mean (SD)	59.8 (11.6)	67.2 (10.4)	60.1 (10.9)	62.1 (11.3)	52.9 (11.0)	62.1 (10.2)	55.9 (12.2)	54.2 (11.4)
Gender
	Male	75	14	23	29	39	9	29	35
	Female	25	86	77	71	61	91	71	65
Brushing
	Missing						1	.
	Once or more per day	94	100	95	96	96	95	86	95
	Less than once per day	6	.	5	4	4	4	14	4
Flossing
	Missing	.	2	1	1	.	1	.
	Once or more per day	28	39	35	35	34	37	29	34
	Less than once per day	72	60	64	64	66	62	71	66
Rinsing
	Missing	66	37	33	39	11	14	.	11
	4 or more times per week	13	21	21	20	26	33	43	27
	3 or less times per week	22	42	46	41	63	53	57	62
Periodontal disease
	Missing	16	30	17	21	17	11	.	16
	Yes	28	9	11	13	12	16	14	13
	No	56	61	71	66	71	72	86	71
Gingivitis
	Missing	13	25	16	18	7	11	14	8
	Yes	31	30	38	33	44	41	29	43
	No	56	46	46	48	49	48	57	49
Suppuration
	Missing	9	21	15	16	9	11	29	9
	Yes	34	18	21	22	8	9	.	8
	No	56	61	63	62	84	80	71	83
Endodontic problems
	Missing	9	21	16	17	9	15	14	10
	Yes	31	32	35	34	27	20	29	26
	No	59	47	49	50	64	65	57	64
Caries
	Missing	13	19	15	16	7	11	29	8
	Yes	50	46	40	43	51	46	14	50
	No	38	35	45	41	42	43	57	42
Extraction
	Missing	.	.	.
	Region matched to ONJ	44	39	43	42	10	8	.	9
	No/ mismatched treatment	56	61	57	58	90	92	100	91
Perio surgery
	Missing	.	2	.	1
	Region matched to ONJ	13	4	.	3	2	3	.	2
	No/ mismatched treatment	88	95	100	96	98	97	100	98
Endodontic treatment
	Missing	.	2	.	1
	Region matched to ONJ	13	14	15	14	9	5	.	9
	No/ mismatched treatment	88	84	85	85	91	95	100	91
Implants
	Missing	.	4	.	1	.	.	.
	Region matched to ONJ	.	7	1	3	1	1	.	1
	No/ mismatched treatment	100	89	99	96	99	99	100	99
History of cancer
	Yes	63	46	96	75	19	35	43	22
	No	37	54	4	25	81	65	57	78
Radiation to the head and neck
	Missing	0	2	2	2	0	1	0	0
	Yes	56	12	20	25	4	9	0	5
	No	44	86	78	74	96	90	100	95