Sample | State | Letters sent out | Letters delivered successfully |
---|---|---|---|
Intervention group | Baden-Wuerttemberg | 455 | 426 (93.6%) |
Rhineland-Palatinate | 297 | 283 (95.3%) | |
Saarland | 54 | 48 (88.9%) | |
Total | 806 | 757 (93.9%) | |
Control group | Baden-Wuerttemberg | 447 | 425 (95.1%) |
Rhineland-Palatinate | 299 | 278 (93.0%) | |
Saarland | 55 | 51 (92.7%) | |
Total | 801 | 754 (94.1%) |