| Total | Male | Age group 6–11 years | ||
---|---|---|---|---|---|
 | n | n | % | n | % |
Total mailed | 5986 | 3066 | 51.2% | 2369 | 39.6% |
Letter returned (irrespective of answer) | 2555 | 1331 | 52.1% | 1036 | 40.5% |
Letter returned positive response | 1072 | 592 | 55.2% | 471 | 43.9% |
Telephone screening positive | 500 | 279 | 55.8% | 214 | 42.8% |
Screening visit positive | 251 | 149 | 59.4% 1 | 122 | 48.6%2 |