Table 4.

Confirmatory factor analysis results for tested one- and two-factor PHQ-9 models by American Indian and Caucasian American group (ages 18 and over).

Models	n	χ2 (df)	CFI	TLI	RMSEA (CI)	SRMR
1) One-Factora
American Indian	1,806	133.29 (27)***	0.995	0.993	0.047 (0.039-0.055)	0.039
Caucasian American	1,811	101.38 (27)***	0.996	0.995	0.039 (0.031-0.047)	0.040
2A) Two-Factorb
American Indian	1,806	108.56 (26)***	0.996	0.994	0.042 (0.034-0.050)	0.036
Caucasian American	1,811	78.18 (26)***	0.997	0.996	0.033 (0.025-0.042)	0.036
2B) Two-Factorc
American Indian	1,806	95.83 (26)***	0.997	0.995	0.039 (0.030-0.047)	0.034
Caucasian American	1,811	70.27 (26)***	0.998	0.997	0.031 (0.022-0.039)	0.035
2C) Two-Factord
American Indian	1,806	121.76 (26)***	0.995	0.994	0.045 (0.037-0.053)	0.037
Caucasian American	1,811	90.73 (26)***	0.997	0.995	0.037 (0.029-0.046)	0.038
2D) Two-Factore
American Indian	1,806	118.77 (26)***	0.995	0.994	0.044 (0.037-0.053)	0.037
Caucasian American	1,811	83.42 (26)***	0.997	0.996	0.035 (0.027-0.043)	0.038
2E) Two-Factorf
American Indian	1,947	48.09 (13)***	0.997	0.996	0.037 (0.026-0.049)	0.030
Caucasian American	1,931	29.85 (13)***	0.999	0.998	0.026 (0.014-0.038)	0.027

Note. CI = Confidence interval. df = Degrees of freedom. Acceptable fits include non-significant χ², RMSEA < 0.05 or at most < 0.08, CFI and TLI > 0.90 and preferably > 0.95, and SRMR < 0.05 or at most < 0.10 (Steenkamp and Baumgartner, 1998; Vandenberg and Lance, 2000).

^***p < 0.001.

^aKroenke et al. (2001).

^bRichardson and Richards (2008).

^cKrause et al. (2008).

^dKrause et al. (2010).

^ede Jonge et al. (2007).

^fGranillo (2012).