Percentages of errors/no error occurring
| Median (95% credible interval) | |
| Without error-checking at each stage | |
| At least one error at any stage | 73.4 (54.4 to 89.7) |
| No error made at any stage | 26.6 (10.3 to 45.6) |
| With error-checking at each stage | |
| At least one error at any stage* | 21.7 (14.1 to 31.0) |
| No error made at any stage* | 78.3 (69.0 to 85.9) |
| Error corrected* | 51.1 (37.0 to 65.0) |
↵* Corrected with β(70,30) (see online appendix 2).