Table 3.
Mean macular thickness and volume differences among diagnostic groups.
| Group (N) | Mean | SD | Meanaa | SEM |
|---|---|---|---|---|
| Mean macular thickness p = 0.482 | ||||
| Control (414) | 275.28 | 13.95 | 271.52aa | 0.87 |
| MCI (192) | 270.66 | 15.24 | 272.51aa | 1.18 |
| AD (324) | 267.09 | 17.76 | 270.83aa | 0.94 |
| Macular volume p = 0.380 | ||||
| Control (414) | 7.78 | 0.39 | 7.68aa | 0.02 |
| MCI (192) | 7.65 | 0.43 | 7.70aa | 0.03 |
| AD (324) | 7.54 | 0.51 | 7.65aa | 0.03 |
Raw and adjusted mean overall total macular thickness (μm) and volume (μm3), standard deviation (SD), and standard error of the mean (SEM). After a multivariate adjustment (aa), no significant differences among diagnostic groups were detected. Dispersion data are shown as SEM.
SD: standard deviation; aaafter adjustment; SEM: standard error of the mean; p: significance; AD: Alzheimer’s disease; MCI: mild cognitive impairment.