Table 4.
Proportion of poor responders in the literature according to regression grades
| TRG grading system | No. of reports (total 25 reports from 21 studies) | Proportion of poor responders | Lower limit of confidence Interval | Upper limit of confidence Interval |
| Mandard | 8 | 34.9 | 22.8 | 49.4 |
| Dworak | 8 | 47.4 | 32.5 | 62.7 |
| Junker/Muller | 2 | 50.8 | 28.8 | 72.5 |
| Japanese | 2 | 35.0 | 20.4 | 52.9 |
| Wheeler | 1 | 38.9 | 30.8 | 47.7 |
| Bujko/Glynne-Jones | 1 | 22.1 | 15.8 | 30.0 |
| Rodel based on Dworak | 1 | 52.2 | 44.9 | 59.5 |
| Rodel based on Wittekind (modified Dworak) | 1 | 14.7 | 10.6 | 19.9 |
| Cologne | 1 | 7.1 | 3.2 | 14.8 |