Table 1.
Descriptive Characteristics of Participants Stratified by Race/Ethnicity and Sex (N=369) in the Mental Stress Ischemia Prognosis Study (MIPS).
| Women | Men | |||||
|---|---|---|---|---|---|---|
| White | African American | p-value | White | African American | p-value | |
| Total, n (%) | 50 (13.5) | 43 (11.7) | 202 (54.7) | 74 (20.1) | ||
| Telomere Length, kilobase pairs, mean (SD) | 5.2 (0.05) | 5.6 (0.1) | <.0001 | 5.2 (0.03) | 5.3 (0.04)† | 0.13 |
| Discrimination Score, mean (SD) | 14.9 (4.3) | 15.4 (4.9) | 0.55 | 13.5 (3.8)* | 16.2 (6.6) | 0.001 |
| Age, mean (SD) | 65.3 (8.8) | 58.9 (8.0) | 0.0003 | 63.5 (9.2) | 58.0 (9.7) | 0.0002 |
| Income < $20,000, n (%) | 10 (20.0) | 18 (41.9) | 0.02 | 16 (7.9)* | 21 (28.4) | <.0001 |
| Education, High School or Less, n (%) | 16 (32.0) | 13 (30.2) | 0.85 | 39 (19.3) | 29 (39.2) | 0.001 |
| History of Smoking, n (%) | 22 (44.0) | 18 (41.9) | 0.84 | 82 (40.6)* | 25 (33.8)* | 0.30 |
| Married/living with partner, n (%) | 26 (52.0) | 13 (30.2) | 0.03 | 157 (77.7) | 41 (55.4) | 0.0003 |
| Diabetes, n (%) | 12 (24.0) | 19 (44.2) | 0.04 | 56 (27.7) | 30 (40.5) | 0.04 |
| Hypertension, n (%) | 36 (72.0) | 40 (93.0) | 0.01 | 145 (71.8) | 70 (94.6) | <.0001 |
| Previous Myocardial Ischemia, n (%) | 18 (36.0) | 21 (48.8) | 0.21 | 67 (33.2) | 34 (46.0) | 0.05 |
| BMI, kg/m2, mean (SD) | 29.3 (6.7) | 32.5 (7.3) | 0.03 | 29.5 (4.8) | 30.4 (4.9) | 0.21 |
| BDI total score, mean (SD) | 9.4 (6.9) | 10.0 (9.4) | 0.76 | 6.7 (6.9) * | 9.9 (10.1) | 0.01 |
| PSS total score, mean (SD) | 13.8 (8.3) | 15.1 (7.4) | 0.43 | 10.8 (6.7)* | 13.7 (7.7) | 0.003 |
Abbreviations: BDI: Beck depression inventory; BMI: Body mass index; MIPS: Mental stress ischemia mechanisms and prognosis study; PSS: Cohen’s perceived stress scale; SD: Standard deviation.
*
p < 0.05 between women and men within race
†
p <0.0001 between women and men within race