Table 1. Comparison of risk parameters between two groups .
| Group 1 (n=234) | Group 2 (n=122) | P | Odds ratio | |
| Age in years(mean ± SD) | 35.45 ± 0.25 | 34.35 ± 0.62 | 0.10 | - |
| Males | 226 (96.58%) | 116 (95.08%) | 0.56 | - |
| Smoking index |
Median 157 Range 1498 Inter quartile Range 225 |
Median 120 Range 1874 Interquartile Range 220 |
0.72 | - |
| Hypertension | 46 (19.66%) | 13 (10.66%) | 0.035 | 1.91(1.06-3.45) |
| Diabetes Mellitus | 31 (13.25%) | 1 (0.82%) | <0.001 | 4.55 (2.12-9.77) |
| Family History of previous CAD | 57 (24.36%) | 40 (32.79%) | 0.10 | 0.65 (0.41-1.07) |
| Waist circumference (cm) | 87.44 ± 10.2 | 83.5 ± 13.72 | 0.008 | - |
| Metabolic syndrome (IDF criteria) | 49 out of 170 (28.82%) | 7 out of 121 (5.78%) | <0.001 | 4.38 (2.43-7.91) |
| Total cholesterol (mg/dL) | 167.92 ± 48.29 | 151.83 ± 42.27 | 0.01 | - |
| LDL cholesterol (mg/dL) | 100.48 ± 43.23 | 85.02 ± 29.37 | 0.003 | - |
| HDL cholesterol (mg/dL) | 36.28 ± 9.84 | 39.54 ± 11.87 | 0.074 | - |
| Triglycerides (mg/dL) | 162.14 ± 93.03 | 112.71 ± 50.78 | <0.001 | - |
| hypercholesterolemia | 58 (24.79%) | 10 (8.2%) | <0.001 | 2.92 (1.67-5.09) |
| Raised LDL | 47 (20.09%) | 3 (2.46%) | <0.001 | 4.29 (2.29-8.04) |
| Reduced HDL cholesterol (<40 mg/dL in males and <50 mg/dL in females) | 166 (70.94%) | 27 out of 50 (54%) | 0.029 | 2.17 (1.13-4.17) |
| Increased Triglycerides (≥150 mg/dL) | 100 (42.73%) | 12 out of 63 (19.05%) | <0.001 | 2.73 (1.54-4.85) |
| Central Obesity (IDF criteria) | 80 out of 170 (47.06%) | 35 out of 121 (28.93%) | 0.002 | 2.19 (1.32-3.43) |
| Carotid Intimal Medial Thickness (in cm) | 0.065 ± 0.002 | 0.063 ± 0.005 | 0.761 | - |
| Plaque | 8 out of 72 (11.11%) | 5 out of 122 (4.1%) | 0.076 | 3.05 (0.95-9.76) |
| Arcus | 32 (13.67%) | 13 (10.66%) | 0.50 | 1.31(0.68-2.54) |
| Premature graying | 66 (28.20%) | 51 (41.80%) | 0.012 | 0.54 (0.34-0.86) |
| Baldness | 41 (17.52%) | 21 (17.21%) | 1.00 | 1.02 (0.57-1.82) |
Group 1: Smokers with premature CAD, Group 2: Smokers without premature CAD