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. 2009 Dec 28;1(2):e52. doi: 10.4081/rt.2009.e52

Table 2. Incidence of malignant GCTs of bone (in 5-year intervals), 1975–2004, according to age at diagnosis, gender, race and stage.

Incidence per 10,000,000 persons
1975–2004 1975–79 1980–84 1985–89 1990–94 1995–99 2000–04
Overall 1.6 2.2 1.4 2.2 2.1 1.2 1.0
Age(years)
 <20 0.6 1.6 -- 1.0 0.3 0.3 0.3
 20–44 2.4 3.2 2.3 2.9 2.2 2.2 1.6
 45+ 1.7 1.7 1.2 2.4 3.6 0.5 1.0
p <0.01
Gender
 Male 1.5 2.0 1.1 2.1 1.8 1.1 1.3
 Female 1.7 2.4 1.6 2.4 2.4 1.2 0.7
p 0.53
Race
 White 1.5 2.4 1.4 2.1 1.9 0.9 0.9
 Black 1.8 - - 3.4 2.9 0.2 1.8
 Other 2.5 3.2 2.6 2.6 3.5 2.2 1.3
p 0.17
Stage
 Localized 0.5 0.8 0.3 0.9 0.5 0.5 0.3
 Regional 0.5 0.9 0.5 0.2 0.8 0.3 0.2
 Distant 0.3 0.3 0.1 0.3 0.3 0.2 0.4
p 0.04

Corresponding p of χ2 test to detect difference in incidence rates for period (1975–2004) between age, gender, race and stage groupings.