Table 1.

Patient Demographics and Incidence of Acute Promyelocytic Leukemia in1975–2008

Characteristic	No. of patients	Incidence per 100,000 (95% CI)
Median age in yrs, (Range)	48, (0–98)
<20	149	0.06 (0.05–0.07)
20–39	372	0.14 (0.13–0.16)
40–59	427	0.22 (0.20–0.24)
≥60	449	0.36 (0.32–0.39)
Total	1397	0.18 (0.17–0.19)
Sex
Male	697	0.19 (0.17–0.20)
Female	700	0.17 (0.15–0.18)
Race
White	1158	0.18 (0.17–0.19)
African American	121	0.14 (0.12–0.17)
American Indians/Alaska Native and Asians/Pacific Islanders	115	0.16 (0.13–0.19)
Unknown	3
Calendar year of diagnosis
1975–1990	352	0.11 (0.10–0.12)
1991–1999	372	0.17 (0.15–0.18)
2000–2008	673	0.27 (0.25–0.29)