Table 3.

Population-based studies of BPH prevalence in African Americans, vs current study^a

Reference	Population	Year	Community-based	Exclusions at outset		Years of accrual	Definition of BPH
				Prostate cancer	Prostate surgery		IPSS ⩾8
Sarma et al,7	Flint Michigan—369 blacks	2003	Y	Y	Y	1996	50–59: 41.7%
							60–69: 51.1%
							70–79: 40.0%
							Overall: 44.8%b
Glasser et al,11	USA—596 blacks	2007	Y	N	N	2001–2002	Overall: 26.4%c
Markland et al,10	San Antonio—355 blacks	2007	N	Y	N	2001–2006	50–59: 34%
							60–69: 33%
							70–79: 57%
							Overall: 36.3%b
Kupelian et al,17	Boston—1770 blacks aged 30–79	2006	Y	Y	Y	2002–2005	Overall: 19.3%d
Current study	Accra, Ghana—950 West Africans	2009	Y	Y	N	2004–2006	50–59: 14.8%
							60–69: 22.7%
							70–74: 34.7%
							Overall: 19.9%b

Abbreviation: IPSS, International Prostate Symptom Score.

^aIncludes population-based studies reporting IPSS⩾8.

^bOverall estimates standardized to the 2000 World Health Organization world standard population for men aged 50–74 years.

^cOverall estimates are not age standardized; data to standardize not presented.

^dOverall estimates are age standardized to the US 2000 Census for specified age grouping.