. Author manuscript; available in PMC: 2009 Apr 1.

Published in final edited form as: J Oral Maxillofac Surg. 2008 Apr;66(4):625–631. doi: 10.1016/j.joms.2007.11.032

Table 1.

Descriptive statistics of study population stratified by ONJ case or Control status

Study Variable	ONJ Case (n₁)	Control (n₂)

Sample Size	30	150
Sex (Males, n₁ or n₂) (%)^*	15 (50)	75 (50)
Age (mean, sd)	65.0 ± 12	66 ± 11
Cancer to BP time in months (mean, sd)	63 ± 67	40 ± 49
Cancer Diagnosis, n (%)
Prostate	4 (13.3)	20 (13.3)
Breast	11 (36.7)	55 (36.7)
Multiple Myeloma	12 (40)	60 (40)
Lung	2 (6.7)	10 (6.7)
Kidney	1 (3.3)	5 (3.3)
Cancer Stage, n, (% with stage 4 disease)
Prostate	4 (100)	3 (15)
Breast (n₁=11, n₂=47)^**	10 (91)	6 (13)
Multiple Myeloma (n₁=1, n₂=15)^‡^**	1 (100)	10 (67)
Lung (n₂=9)^**	2 (100)	4 (44)
Kidney	1 (100)	3 (60)
Metastasis (n₁=29)^**	27 (93.1)	71 (47.3)

n (%) = sample size (% of sample)

^**

When data are missing, the available sample size is reported in parenthesis

^†

Cases and controls were matched

^‡

Percent with Stage 3 disease