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Frequency of β-thalassemia trait in school children in Delhi
| School | No. Screened | No. | % |
|---|---|---|---|
| South | 838 | 19 | 2.3 |
| South | 1187 | 26 | 2.2 |
| Central | 420 | 27 | 6.4 |
| West | 842 | 49 | 5.8 |
| West | 433 | 39 | 9.0 |
| West | 563 | 47 | 8.3 |
| North | 424 | 39 | 9.2 |
| North | 701 | 50 | 7.1 |
| Total | 5408 | 296 | 5.47 |
