TABLE 2—
Age-Adjusted Incidence Rates and Counts for Ovarian Cancer and Uterine Cancer, by IHS Region, for AI/AN Compared With White Females: United States, 1999–2009
| CHSDA Counties |
All US Counties |
|||||||||
| Variable | AI/AN Count | AI/AN Rate | White Count | White Rate | AI/AN: White RR (95% CI) | AI/AN Count | AI/AN Rate | White Count | White Rate | AI/AN: White RR (95% CI) |
| Ovary | ||||||||||
| IHS region | ||||||||||
| Northern Plains | 112 | 11.2 | 6976 | 13.7 | 0.82* (0.67, 0.99) | 165 | 10.3 | 34 674 | 13.9 | 0.74* (0.62, 0.87) |
| Alaska | 52 | 12.5 | 266 | 12.1 | 1.04 (0.74, 1.41) | 52 | 12.5 | 266 | 12.1 | 1.04 (0.74, 1.41) |
| Southern Plains | 239 | 16.8 | 2719 | 13.2 | 1.28* (1.11, 1.46) | 280 | 14.7 | 14 477 | 13.2 | 1.12 (0.99, 1.26) |
| Southwest | 268 | 13.5 | 5886 | 13.0 | 1.04 (0.91, 1.18) | 282 | 13.1 | 9767 | 13.3 | 0.99 (0.87, 1.11) |
| Pacific Coast | 144 | 12.4 | 13 793 | 14.4 | 0.86 (0.72, 1.03) | 182 | 10.5 | 25 823 | 14.4 | 0.73* (0.62, 0.85) |
| East | 36 | 7.9 | 13 829 | 13.9 | 0.57* (0.39, 0.79) | 142 | 5.4 | 102 188 | 13.8 | 0.39* (0.33, 0.46) |
| Age, y | ||||||||||
| All ages | 851 | 13.3 | 43 469 | 13.8 | 0.96 (0.89, 1.03) | 1103 | 10.6 | 187 195 | 13.8 | 0.77* (0.72, 0.82) |
| < 50 | 234 | 4.0 | 6957 | 4.0 | 1.0 (0.87, 1.14) | 301 | 3.2 | 31 979 | 4.2 | 0.75* (0.67, 0.84) |
| 50–59 | 210 | 24.0 | 8981 | 25.8 | 0.93 (0.81, 1.07) | 275 | 18.5 | 38 980 | 26.1 | 0.71* (0.63, 0.80) |
| 60–69 | 194 | 39.1 | 9790 | 41.1 | 0.95 (0.82, 1.1) | 259 | 32.7 | 41 539 | 40.8 | 0.8* (0.71, 0.91) |
| ≥ 70 | 213 | 52.6 | 17 741 | 55.0 | 0.96 (0.83, 1.1) | 268 | 42.1 | 74 697 | 53.1 | 0.79* (0.70, 0.90) |
| Corpus uteri | ||||||||||
| IHS region | ||||||||||
| Northern Plains | 224 | 22.9 | 13 474 | 26.4 | 0.86* (0.75, 0.99) | 308 | 19.0 | 67 703 | 27.2 | 0.70* (0.62, 0.79) |
| Alaska | 74 | 17.1 | 507 | 23.1 | 0.74* (0.56, 0.95) | 74 | 17.1 | 507 | 23.1 | 0.74* (0.56, 0.95) |
| Southern Plains | 392 | 27.0 | 4128 | 20.0 | 1.35* (1.21, 1.50) | 435 | 22.4 | 21 883 | 19.8 | 1.13* (1.02, 1.25) |
| Southwest | 451 | 21.5 | 9034 | 19.6 | 1.09 (0.99, 1.20) | 475 | 20.7 | 15 131 | 20.2 | 1.03 (0.93, 1.13) |
| Pacific Coast | 296 | 23.6 | 23 046 | 23.9 | 0.99 (0.87, 1.11) | 378 | 20.2 | 44 239 | 24.4 | 0.83* (0.74, 0.92) |
| East | 67 | 14.8 | 25 029 | 25.2 | 0.59* (0.45, 0.75) | 258 | 9.9 | 190 045 | 25.5 | 0.39* (0.34, 0.44) |
| Age, y | ||||||||||
| All ages | 1504 | 22.6 | 75 218 | 23.8 | 0.95* (0.90, 1.00) | 1928 | 17.9 | 339 508 | 24.9 | 0.72* (0.69, 0.75) |
| < 50 | 465 | 8.3 | 8997 | 5.1 | 1.62* (1.47, 1.78) | 584 | 6.3 | 41 753 | 5.4 | 1.17* (1.08, 1.27) |
| 50–59 | 422 | 48.2 | 19 917 | 56.8 | 0.85* (0.77, 0.93) | 535 | 36.0 | 90 628 | 60.4 | 0.6* (0.55, 0.65) |
| 60–69 | 334 | 66.8 | 20 722 | 86.9 | 0.77* (0.69, 0.86) | 441 | 55.1 | 93 669 | 91.8 | 0.6* (0.54, 0.66) |
| ≥ 70 | 283 | 68.8 | 25 582 | 80.7 | 0.85* (0.76, 0.96) | 368 | 57.3 | 113 458 | 82.3 | 0.7* (0.63, 0.77) |
Note. AI/AN = American Indians/Alaska Natives; CHSDA = Contract Health Service Delivery Areas; CI = confidence interval; IHS = Indian Health Service; NPCR = National Program of Cancer Registries; RR = rate ratios; SEER = Surveillance, Epidemiology, and End Results program. Dashes indicate that counts < 6 are suppressed; if no cases reported, then rates and RRs could not be calculated. RRs were calculated in SEER*Stat before rounding of rates and may not equal RRs calculated from rates presented in table. Analyses are limited to persons of non-Hispanic origin. Rates are per 100 000 persons and were age adjusted to the 2000 US standard population (19 age groups; Census P25-1130). AI/AN race is reported by NPCR and SEER registries or through linkage with the IHS patient registration database. Percent regional coverage of AI/AN persons in CHSDA counties to AI/AN persons in all counties: Northern Plains = 64.8%; Alaska = 100%; Southern Plains = 76.3%; Southwest = 91.3%; Pacific Coast = 71.3%; East = 18.2%; total US = 64.2%. IHS regions are defined as follows: AKa; Northern Plains (IL, IN,a IA,a MI,a MN,a MT,a NE,a ND,a SD,a WI,a WYa); Southern Plains (OK,a KS,a TXa); Southwest (AZ,a CO,a NV,a NM,a UTa); Pacific Coast (CA,a ID,a OR,a WA,a HI); East (AL,a AR, CT,a DE, FL,a GA, KY, LA,a ME,a MD, MA,a MS,a MO, NH, NJ, NY,a NC,a OH, PA,a RI,a SC,a TN, VT, VA, WV, DC).
Source. Cancer registries in the Centers for Disease Control and Prevention’s NPCR; the National Cancer Institute’s SEER program. Years of data and registries used: 1999–2008: WIa; 1999–2009 (43 states): AK,a AL,a AZ,a CA,a CO,a CT,a DE, FL,a GA, HI, IA,a ID,a IL, IN,a KS,a KY, LA,a MA,a MD, ME,a MI,a MN,a MO, MT,a ND,a NE,a NH, NJ, NM,a NV,a NY,a OH, OK,a OR,a PA,a RI,a SC,a TX,a UT,a VT, WA,a WV, WYa; 1999–2001 and 2003–2009: DC; 2001–2009: AR, NC,a SDa; 2002–2009: VA; 2003–2009: MS,a TN.
State with ≥ 1 county designated as CHSDA.
*P < .05.