Prostate Cancer Incidence and Mortality in Barbados, West Indies

Table 3

Incidence rate ratios (IRRs) comparing age-specific incidence rates and secular incidence rates between Barbados and the United States (SEER 17 registries; African Americans) [6].

Characteristic	IRR	95% CI
Age^1
40–44	3.84	1.43–10.25
45–49	3.57	2.11–6.05
50–54	1.49	1.20–1.87
55–59	1.39	1.16–1.65
60–64	1.53	1.31–1.77
65–69	1.67	1.46–1.92
70–74	1.34	1.18–1.53
75–79	1.46	1.24–1.72
80–84	1.74	1.38–2.20
85+	2.45	1.73–3.46
Year^2
2002	1.87	1.50–2.34
2003	1.69	1.44–1.98
2004	1.34	1.16–1.55
2005	1.45	1.24–1.69
2006	1.77	1.50–2.11
2007	1.30	1.12–1.50

¹Age-specific incidence rate ratios calculated for ages 40–44 and older—below age 40 there was just one case of prostate cancer in Barbados.
²Annual incidence rate ratios calculated for ages 40–44 and above using Poisson regression, adjusted for age. IRRs based on unadjusted crude rates are (2002) 1.35 (1.08–1.69), (2003) 1.26 (1.07–1.48), (2004) 1.01 (0.88–1.17), (2005) 1.12 (0.96–1.31), (2006) 1.43 (1.20–1.69), (2007) 1.06 (0.92–1.23).