Effect sizes and 95% CI for the comparison of various groups regarding annual payment amounts per person
| Independent variable | Factor levels | Effect size | (95% CI) |
| Disclosure behaviour: once | |||
| Year | 2015 vs 2016 | rb=0.07 | (0.06 to 0.09) |
| Disclosure behaviour: repeatedly | |||
| Year | 2015 vs 2016 | rb=0.14 | (0.12 to 0.17) |
| 2015 | |||
| Disclosure behaviour | Once vs repeatedly | rb=−0.31 | (−0.32 to −0.29) |
| Gender | Male vs female | rb=0.28 | (0.26 to 0.29) |
| Academic degree | None vs Dr vs Professor | ε2=0.12 | (0.11 to 0.13) |
| None vs Dr | rb=−0.24 | (−0.25 to −0.22) | |
| None vs Professor | rb=−0.68 | (−0.69 to −0.66) | |
| Dr vs Professor | rb=−0.51 | (−0.53 to −0.49) | |
| 2016 | |||
| Disclosure behaviour | Once vs repeatedly | rb=−0.32 | (−0.34 to −0.31) |
| Gender | Male vs female | rb=0.31 | (0.30 to 0.33) |
| Academic degree | none vs Dr vs Professor | ε2=0.12 | (0.11 to 0.13) |
| None vs Dr | rb=−0.21 | (−0.23 to −0.20) | |
| None vs Professor | rb=−0.68 | (−0.70 to −0.66) | |
| Dr vs Professor | rb=−0.50 | (−0.53 to −0.48) |
rb=rank-biserial correlation: positive values indicate that the after scores are smaller than the before scores.