Proportion of deaths due to various causes by screening arm in randomised trials of faecal occult blood testing
| Screened | Control | Screened<Control | ||||||
|---|---|---|---|---|---|---|---|---|
| n | % | n | % | Difference (n) | Difference (%) | |||
| Hardcastle and colleagues1 | 75253 | 74998 | ||||||
| All causes | 12624 | 16.78 | 12515 | 16.69 | +109 | +0.09 | ||
| CRC | 360 | 0.48 | 420 | 0.56 | −60 | −0.08 | ||
| Non-CRC | 12264 | 16.30 | 12095 | 16.13 | +169 | +0.17 | ||
| IHD | ||||||||
| Kronborg and colleagues2 | 30967 | 30966 | ||||||
| All causes | 6228 | 20.11 | 6303 | 20.35 | −75 | −0.24 | ||
| CRC | 182 | 0.59 | 230 | 0.74 | −48 | −0.16 | ||
| Non-CRC | 6046 | 19.52 | 6073 | 19.61 | −27 | −0.09 | ||
| Cardiovascular | 2497 | 8.06 | 2443 | 7.89 | +54 | +0.17 | ||
| Mandel and colleagues4 | 15570 | 15394 | ||||||
| All causes | 3361 | 21.59 | 3340 | 21.70 | +21 | −0.11 | ||
| CRC | 82 | 0.53 | 121 | 0.79 | −39 | −0.26 | ||
| Non-CRC | 3279 | 21.06 | 3219 | 20.91 | +60 | +0.15 | ||
| IHD | 1079 | 6.93 | 1025 | 6.66 | +54 | +0.27 |
CRC, colorectal cancer; IHD, ischaemic heart disease.