Table 1. Baseline Characteristics of Study Participants.
| Variable | Patients No. (%) | P value | |
|---|---|---|---|
| Control (n = 1384) | With cancer (n = 812) | ||
| Age, ya | |||
| Mean (SD) | 52.60 (14.62) | 52.63 (14.53) | .96 |
| <40 | 231 (17) | 136 (17) | >.99 |
| 40-49 | 404 (29) | 233 (29) | |
| 50-59 | 328 (24) | 199 (25) | |
| 60-69 | 223 (16) | 129 (16) | |
| 70-79 | 133 (10) | 78 (10) | |
| ≥80 | 65 (5) | 37 (5) | |
| Race | |||
| American Indian | 2 (<1) | 1 (<1) | .21 |
| Asian | 16 (1) | 19 (2) | |
| Black | 11 (1) | 8 (1) | |
| Whiteb | 1283 (93) | 750 (92) | |
| Unknownc | 72 (5) | 34 (4) | |
| Sex | |||
| Female | 1081 (78) | 623 (77) | .45 |
| Malea | 303 (22) | 189 (23) | |
| Diabetesa | 93 (7) | 64 (8) | .31 |
| Hypertensiona | 370 (27) | 246 (30) | .07 |
| Index CAD >50%, MI, and stress clinical diagnosesa | 25 (2) | 42 (5) | <.001 |
| Hyperlipidemia | 533 (39) | 313 (39) | .99 |
| BMI >30a | 432 (31) | 247 (30) | .70 |
| History of smoking | 284 (21) | 347 (43) | <.001 |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); CAD, coronary artery disease; MI, myocardial infarction.
a
Matching factors. Participants were age-matched by decade.
b
Five patients had ethnicity coded as Hispanic, Mexican, or other Spanish-speaking ethnicity and were included in White race.
c
Includes patients who did not provide their race or ethnicity.