Table 2.
Socioeconomic status and level of C-reactive protein (CRP) in 985 participants with coronary heart disease
| CRP |
p Value | |||
|---|---|---|---|---|
| <1 mg/L | 1–3 mg/L | >3 mg/L | ||
| Education | ||||
| Grade ≤8 | 11 | 19 | 22 | 0.0002 |
| Grades 9–11 | 12 | 20 | 43 | |
| High school graduate | 36 | 55 | 85 | |
| Some college or vocational school | 85 | 118 | 137 | |
| College degree | 63 | 57 | 54 | |
| Graduate or professional degree | 54 | 63 | 49 | |
| Annual income (United States dollars) | ||||
| <$10,000 | 58 | 87 | 100 | 0.002 |
| $10,000–$19,000 | 53 | 77 | 99 | |
| $20,000–$29,999 | 27 | 45 | 61 | |
| $30,000–$39,999 | 22 | 31 | 40 | |
| $40,000–$50,000 | 25 | 33 | 38 | |
| >$50,000 | 75 | 56 | 52 | |
Values are numbers of subjects.