TABLE 2—

Average Annual TB Death Rates and Rate Ratios by Age, Sex, and Indian Health Service Region for American Indian/Alaska Native and White People: Contract Health Service Delivery Area Counties, United States, 1990–1998 and 1999–2009

	1990–1998			1999–2009
Variable	AI/AN Death Rate (per 100 000 Population)	White Death Rate (per 100 000 Population)	AI/AN:White RR (95% CI)	AI/AN Death Rate (per 100 000 Population)	White Death Rate (per 100 000 Population)	AI/AN:White RR (95% CI)
Total	3.3	0.3	11.37* (9.68, 13.28)	1.5	0.1	11.50* (10.19, 12.94)
Age group, y
0–24	< 0.1	< 0.1	8.56 (0.83, 47.16)	…	0.0	NA
25–44	0.5	0.1	7.65* (3.87, 13.88)	0.4	0.0	20.21* (9.96, 39.94)
45–64	3.7	0.3	13.96* (10.15, 18.90)	1.4	0.1	12.70* (8.99, 17.65)
65–84	17.2	1.4	12.00* (9.36, 15.21)	8.0	0.6	13.84* (10.60, 17.84)
≥ 85	46.7	3.2	14.78* (9.04, 23.05)	21.4	1.7	12.34* (7.36, 19.64)
Sex
Male	4.0	0.4	9.49* (7.50, 11.83)	2.0	0.2	12.10* (9.21, 15.57)
Female	2.8	0.2	14.47* (11.43, 18.08)	1.3	0.1	14.45* (10.94, 18.74)
IHS region
Alaska	3.7	0.3	13.99* (4.09, 85.73)	3.9	0.1	48.51* (13.99, 315.95)
Male	3.8	0.3	13.97* (4.08, 84.97)	4.8	0.1	70.12* (12.01, 665.05)
Female	4.4	0.1	44.41* (6.72, 14.08)	3.3	0.1	42.27* (7.19, 1773.31)
East	1.3	0.3	4.64* (1.36, 10.79)	…	0.1	NA
Male	2.7	0.4	6.29* (1.13, 17.27)	…	0.1	NA
Female	0.5	0.2	2.81 (0.07, 13.32)	…	0.1	NA
Northern Plains	4.4	0.2	23.10* (15.33, 33.58)	1.7	0.1	19.67* (11.88, 30.94)
Male	5.1	0.3	17.20* (9.18, 29.47)	1.9	0.1	19.1* (8.77, 37.51)
Female	3.9	0.1	33.05* (17.86, 56.93)	1.6	0.1	21.65* (10.54, 40.29)
Pacific Coast	1.8	0.3	5.41* (3.32, 8.26)	0.7	0.1	6.14* (3.42, 10.11)
Male	2.5	0.4	5.56* (2.78, 9.77)	0.9	0.2	5.97* (2.85, 11.07)
Female	1.2	0.2	5.24* (2.27, 10.12)	0.5	0.1	5.88* (1.88, 13.44)
Southern Plains	2.4	0.3	7.66* (4.55, 12.90)	1.1	0.2	5.54* (3.31, 8.84)
Male	3.2	0.4	7.60* (3.59, 16.10)	1.7	0.3	5.66* (2.71, 10.52)
Female	2.0	0.2	8.09* (3.68, 17.86)	0.7	0.1	6.49* (2.68, 13.97)
Southwest	4.7	0.3	13.68* (10.29, 17.95)	2.3	0.1	15.56* (11.25, 21.14)
Male	5.4	0.5	10.66* (7.09, 15.56)	2.8	0.2	14.21* (8.84, 21.88)
Female	4.2	0.2	19.19* (12.52, 28.82)	2.0	0.1	19.20* (11.84, 30.08)

Note. AI/AN = American Indian/Alaska Native; CI = confidence interval; IHS = Indian Health Service; NA = not applicable; RR = rate ratio. The sample size was n = 372. Dashes indicate that counts < 10 were suppressed; if no cases were reported, then rates and RRs could not be calculated. Cases aged 0–24 y are included in overall totals, but rows have been suppressed as a result of few cases. Analyses are limited to people of non-Hispanic origin. AI/AN race is reported from death certificates or through linkage with the IHS patient registration database. Rates are per 100 000 people and were age adjusted to the 2000 US standard population (11 age groups; Census P25-1130²⁰). RRs were calculated in SEER*Stat before rounding and may not equal RRs calculated from rates presented in table. IHS regions are defined as follows: Alaska^a; Northern Plains (IL, IN,^a IA,^a MI,^a MN,^a MT,^a NE,^a ND,^a SD,^a WI,^a WY^a); Southern Plains (OK,^a KS,^a TX^a); Southwest (AZ,^a CO,^a NV,^a NM,^a UT^a); 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). Percentage 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%.

Source. AI/AN Mortality Database (1990–2009); the following states and years of data were excluded because Hispanic origin was not collected on the death certificate: LA, 1990; NH, 1990–1992; OK, 1990–1996.

^aIdentifies states with more than 1 county designated as CHSDA.

*P < .05.