Table 1.

Descriptive Statistics by Ethnicity

	N	Caucasian N = 727	African American N = 137	Combined N = 864	Test Statistic
Current Antidepressant	864	21% $\frac{153}{727}$	12% $\frac{16}{137}$	20% $\frac{169}{864}$	${\chi }_1^2=6.43$, P = 0.0111
BDI Score	864	3 6 10	3 6 11	3 6 10	F1,862 = 0.43, P = 0.5112
BDI Category : None	864	73% $\frac{533}{727}$	66% $\frac{90}{137}$	72% $\frac{623}{864}$	${\chi }_2^2=3.53$, P = 0.1711
Mild-Mod		21% $\frac{150}{727}$	26% $\frac{35}{137}$	21% $\frac{185}{864}$
Mod- Severe		6% $\frac{44}{727}$	9% $\frac{12}{137}$	6% $\frac{56}{864}$
Gender : Women	864	27% $\frac{197}{727}$	41% $\frac{56}{137}$	29% $\frac{253}{864}$	${\chi }_1^2=10.6$, P = 0.0011
Age  yrs	864	55 63 71	50 58 66	54 62 71	F1,862 = 20.7, P <0.0012
Education : < HS	864	27% $\frac{195}{727}$	49% $\frac{67}{137}$	30% $\frac{262}{864}$	${\chi }_2^2=31.2$, P< 0.0011
HS/Some Coll.		51% $\frac{374}{727}$	43% $\frac{59}{137}$	50% $\frac{433}{864}$
Coll./Post Grad.		22% $\frac{158}{727}$	8% $\frac{11}{137}$	20% $\frac{169}{864}$
Annual Income : <$15K	770	22% $\frac{145}{653}$	47% $\frac{55}{117}$	26% $\frac{200}{770}$	${\chi }_3^2=53.1$, P<0.0011
$15–30K		22% $\frac{142}{653}$	32% $\frac{37}{117}$	23% $\frac{179}{770}$
$30–50K		22% $\frac{144}{653}$	13% $\frac{15}{117}$	21% $\frac{159}{770}$
>$50K		34% $\frac{222}{653}$	9% $\frac{10}{117}$	30% $\frac{232}{770}$
Smoking Status : Current	864	14% $\frac{104}{727}$	14% $\frac{19}{137}$	14% $\frac{123}{864}$	${\chi }_2^2=3.7$, P = 0.1571
Never		28% $\frac{202}{727}$	36% $\frac{49}{137}$	29% $\frac{251}{864}$
Quit		58% $\frac{421}{727}$	50% $\frac{69}{137}$	57% $\frac{490}{864}$
3-Vessel Disease	864	43% $\frac{313}{727}$	47% $\frac{65}{137}$	44% $\frac{378}{864}$	${\chi }_1^2=0.9$, P = 0.3421
LVEF  %	864	47 59 65	38 51 62	45 58 65	F1,862 = 12.7, P <0.0012
Heart Failure	864	18% $\frac{133}{727}$	35% $\frac{48}{137}$	21% $\frac{181}{864}$	${\chi }_1^2=19.5$, P < 0.0011
Prior MI	864	43% $\frac{314}{727}$	38% $\frac{52}{137}$	42% $\frac{366}{864}$	${\chi }_1^2=1.29$, P = 0.2551
Prior CABG	864	37% $\frac{268}{727}$	34% $\frac{47}{137}$	36% $\frac{315}{864}$	${\chi }_1^2=0.33$, P = 0.5681
Current CAD Tx : Medical	864	55% $\frac{400}{727}$	61% $\frac{84}{137}$	56% $\frac{484}{864}$	${\chi }_2^2=2.5$, P = 0.2861
PTCA		15% $\frac{110}{727}$	15% $\frac{21}{137}$	15% $\frac{131}{864}$
CABG		30% $\frac{217}{727}$	23% $\frac{32}{137}$	29% $\frac{249}{864}$
Hypertension	864	78% $\frac{564}{727}$	91% $\frac{125}{137}$	80% $\frac{689}{864}$	${\chi }_1^2=1.33$, P < 0.0011
SBP	863	118 129 140	118 130 143	118 129 140	F1.861 = 0.89, P = 0.3452
DBF	863	61 68 74	62 70 80	61 68 75	F1,861 = 10.1, P = 0.0022
COPD	864	16% $\frac{118}{727}$	18% $\frac{24}{137}$	16% $\frac{142}{864}$	${\chi }_1^2=0.14$, P = 0.7091
Beta Blockers	864	81% $\frac{589}{727}$	81% $\frac{111}{137}$	81% $\frac{700}{864}$	${\chi }_1^2=0$, P = 0.9991

^{a b c}represent the lower quartile a, the median b, and the upper quartile c for continuous variables.

N is the number of non-missing values.

¹Tests used: Pearson test;

²Wilcoxon test