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Hemoglobin level distribution of cases and controls
| Beta-thalassemia | Total (%) (1300) | |||||
|---|---|---|---|---|---|---|
| Cases (66) | Controls (1234) | |||||
| Count (n) | % of total | Count (n) | % of total | |||
| Hemoglobin (gm%) | ||||||
| < 5 | 1 | 0.1 | 17 | 1.3 | 18 | 1.4% |
| 5–7 | 10 | 0.8 | 282 | 21.7 | 292 | 22.5% |
| 7–9 | 23 | 1.8 | 362 | 27.8 | 385 | 29.6% |
| 9–11 | 32 | 2.5 | 573 | 44.1 | 605 | 46.5% |
| Total | 66 | 5.1 | 1234 | 94.9 | 1300 | 100% |
