Table 3.
Admission Cerebrospinal Fluid Tau Concentrations by Retinopathy and Associated Subcategories (Retinal Hemorrhages, Vessel Changes, Macular Whitening)
| Category | CSF Tau Concentration, Median (IQR), No. | P Valuea | |
|---|---|---|---|
| Present | Absent | ||
| Retinopathy | 448.64 (266.37–1020.39), 100 | 275.33 (189.06–816.05), 45 | .04 |
| Retinal hemorrhages | 603.35 (287.57–1196.59), 84 | 261.53 (185.63–654.59), 60 | <.001 |
| Peripheral whitening | 460.1 (265.58–1019.81), 39 | 406.99 (234.96–921.34), 105 | .67 |
| Vessel changes | 293.29 (250.44–957.60), 36 | 436.59 (238.13–975.94), 108 | .54 |
| Papilledema | 257.47 (125.45–1411.87), 4 | 417.33 (239.66–971.16), 140 | .39 |
| Macular whitening | 408.14 (262.42–1019.81), 54 | 414.25 (226.75–921.34), 90 | .38 |
Abbreviations: CSF, cerebrospinal fluid; IQR, interquartile range.
aWilcoxon rank-sum test.