Table 1.

Percent of American Indians/Alaska Native (AI/AN) misclassified as another race by year, Oklahoma 1991-2015.^a

Joinpoint*	Years	APC (95% CI)	p-value
Trend 1	1991-2001	−0.2 (−1.4, 1.0)	0.74
Trend 2	2001-2005	−6.9 (−13.7, 0.4)	0.06
Trend 3†	2005-2015	−1.4 (−2.5, −0.2)	0.03
Overall‡	1991-2005	−1.8 (−3.1, −0.5)	0.007

Abbreviations: APC, annual percent change; AAPC, average annual percent change;

^*Two joinpoints were identified for AI/ANs.

^†Annual percent change is significantly different from 0 at alpha of 0.05.

^‡Average annual percent change is significantly different from 0 at alpha of 0.05.