| Descriptive statisticsa | |||
| Dependent variable: NI_prop | |||
| trichotomous age | Mean | Std. Deviation | N |
| <27 | 0.7019 | 0.09599 | 13 |
| 27 - 62 | 0.5938 | 0.21348 | 4 |
| 62+ | 0.5000 |
| 1 |
| Total | 0.6667 | 0.13558 | 18 |