Univariate modelling of pupil size for right and left eyes
| Eye | Model | χ2 | p Value | df | AIC |
| Right | ACE and age | 5.207 | 0.635 | 7 | −8.793 |
| ACE no age | 22.694 | 0.004 | 8 | 6.694 | |
| ADE and age | 5.166 | 0.640 | 7 | −8.834 | |
| AE and age | 5.207 | 0.735 | 8 | −10.793 | |
| CE and age | 80.261 | 0 | 8 | 64.261 | |
| Left | ACE and age | 4.751 | 0.690 | 7 | −9.249 |
| ACE no age | 17.773 | 0.023 | 8 | 1.773 | |
| ADE and age | 4.522 | 0.718 | 7 | −9.478 | |
| AE and age | 4.751 | 0.784 | 8 | −11.249 | |
| CE and age | 86.968 | 0 | 8 | 70.968 |
χ2 = χ2 goodness of fit statistic; df = degrees of freedom, p = probability; AIC = Akaike's information criterion. See text for further abbreviations.