Table 1.
Summary of sample characteristics and experimental results.
| AD (n = 22) | Control (n = 14) | p-value mean test | |
|---|---|---|---|
| Characteristics | |||
| Male | 8 | 4 | 0.248 |
| Female | 14 | 10 | 0.414 |
| Mean age (range, yrs) | 76.7 (43–96) | 79.8 (64–91) | 0.673 |
| Experimental Results | |||
| (mean ± sd, ms−1) | 0.033 ± 0.005 | 0.028 ± 0.004 | 0.008 |
| Fe(III) (mean ± sd, μg/gww) | 6.74 ± 3.48 | 5.29 ± 3.66 | 0.125 |
| Fe3O4/γ−Fe2O3 (mean ± sd, ng/gdw) | 118.83 ± 125.87 | 121.03 ± 123.11 | 0.878 |
| Fe2O3 • 0.5H2O (mean ± sd, μg/gdw) | 381.12 ± 178.97 | 240.84 ± 98.02 | 0.007 |
A chi-square test was used to assess differences in gender between AD and control group. A Mann-Whitney U test was used to assess differences in age between AD and control group. Student’s t-test was performed to test differences in the means of the measured iron concentrations. Statistical tests were repeated with and without the presence of the outliers, and the same conclusion about the significance of the test was reached. The index dw refers to dry weight, and ww refers to wet weight.