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| Variable | N | % |
| Age | ||
| 45-50 | 2 | 11.11% |
| 51-56 | 9 | 50% |
| 57-62 | 3 | 16.67% |
| 63-68 | 4 | 22.22% |
| History of CAD(years) | ||
| 2-4 | 4 | 22.22% |
| 5-7 | 8 | 44.45% |
| 8-10 | 6 | 33.33% |
| Taking types | ||
| Inhaling | 10 | 55.56% |
| Injecting | 8 | 44.44% |
| Level of education | ||
| Illiterate | 5 | 27.78% |
| Elementary school | 6 | 33.33 |
| Diploma | 4 | 22.22% |
| B.S. or higher | 3 | 16.67% |
| Employment Status | ||
| Self-employed | 9 | 50% |
| Clerk | 5 | 27.78% |
| Retired | 4 | 22.22% |
