Incidence of Skeletal-Related Events in Patients with Castration-Resistant Prostate Cancer: An Observational Retrospective Cohort Study in the US
Table 1
Demographic and clinical characteristics of the study cohort (N = 2,234).
Variable
Number of Patients (%)
Race
White
1,867 (83.6)
Black
218 (9.8)
Asian
46 (2.1)
Hispanic
48 (2.1)
Other or
55 (2.5)
Age at cohort entry, years
Mean (SD)
76.6 (6.2)
Distribution
65-69
297 (13.3)
70-74
625 (28.0)
75-79
595 (26.6)
80-84
451 (20.2)
85+
266 (11.9)
SRE prior to cohort
1,252 (56.0)
Use of bone-targeted agent
First use of bone-targeted agent prior to cohort
1,213 (54.3)
First use of bone-targeted agent after cohort entry
326 (14.6)
No use of bone-targeted agents
695 (31.1)
Length of follow-up, months
Mean (SD)
10.6 (11.6)
Distribution
< 6 months
960 (43.0)
6 months to 1 year
590 (26.4)
> 1 to 1.5 years
317 (14.2)
> 1.5 to 2 years
152 (6.8)
> 2 years
215 (9.6)
SD = standard deviation. Categories were combined to avoid reporting a count of < 11. Identified in the Medicare Provider Analysis and Review file, carrier claims, or outpatient claims anytime between the initial date of prostate cancer diagnosis and the cohort entry date. Identified any time between the initial date of prostate cancer diagnosis and the cohort entry date.
