TABLE 1.

Demographic Characteristics of AIN 3 Cases in the San Francisco/Oakland Cancer Registry by Calendar Period (N=1319)

Characteristic	2000–2004 n=466	2005–2009 n=853
Age, y, no. (%)
20–34	46 (9.87)	102 (11.96)
35–49	291 (62.45)	424 (49.71)
50–64	112 (24.03)	291 (34.11)
≥65	17 (3.65)	36 (4.22)
Sex, no. (%)
Male	398 (85.41)	753 (88.28)
Female	68 (14.59)	100 (11.72)
Race, no. (%)
White	373 (80.04)	634 (74.33)
Black	37 (7.94)	95 (11.14)
Other/unknown	56 (12.02)	124 (14.54)

Abbreviation: AIN 3, anal intraepithelial neoplasia 3.