Table 4 Characteristics (mean (SD)) of participants above and below selected cutoffs
< −1.0 SD on two memory tests | Below cutoff | Above cutoff | F | P |
|---|---|---|---|---|
(n = 196) | (n = 291) | |||
Category fluency, z score | −0.40 (1.11) | 0.38 (1.28) | 14.23 | <0.001 |
BNT, scaled score | 10.09 (3.62) | 12.55 (3.56) | 25.60 | <0.001 |
Trails B/A ratio, z score | 0.01 (1.14) | −0.45 (0.82) | 7.18 | <0.001 |
BPF | 0.81 (0.03) | 0.82 (0.03) | 49.02 | <0.001 |
Left HP volume, cm3 | 0.23 (0.03) | 0.27 (0.03) | 44.83 | <0.001 |
Right HP volume, cm3 | 0.25 (0.03) | 0.28 (0.03) | 41.03 | <0.001 |
v CSF, cm3 | 3.52 (1.59) | 3.19 (1.49) | 28.99 | <0.001 |
WMH, cm3 | 0.63 (1.34) | 0.87 (2.70) | 8.69 | <0.0001 |
< −1.5 SD on one memory test | Below cutoff | Above cutoff | F | P |
(n = 264) | (n = 223) | |||
Category fluency, z score | −0.31 (1.11) | 0.51 (1.31) | 14.23 | <0.001 |
BNT, scaled score | 10.47 (3.71) | 12.85 (3.45) | 24.00 | <0.001 |
Trails B/A ratio, z score | −0.11 (1.08) | −0.45 (0.83) | 3.81 | 0.005 |
BPF | 0.81 (0.03) | 0.82 (0.02) | 44.99 | <0.001 |
Left HPV, cm3 | 0.24 (0.03) | 0.27 (0.03) | 27.38 | <0.001 |
Right HPV (cm3) | 0.25 (0.03) | 0.29 (0.03) | 33.42 | <0.001 |
v CSF, cm3 | 3.53 (1.63) | 3.07 (1.40) | 28.94 | <0.001 |
WMH, cm3 | 0.82 (2.31) | 0.72 (2.19) | 8.89 | <0.001 |
< −2.0 SD on one memory test | Below cutoff | Above cutoff | F | P |
(n = 174) | (n = 313) | |||
Category fluency, z score | −0.42 (1.05) | 0.33 (1.31) | 11.61 | <0.001 |
BNT, scaled score | 10.19 (3.71) | 12.32 (3.60) | 19.22 | <0.001 |
Trails B/A ratio, z score | −0.08 (1.12) | −0.37 (0.89) | 3.40 | 0.009 |
BPF | 0.81 (0.03) | 0.82 (0.03) | 45.07 | <0.001 |
Left HPV, cm3 | 0.23 (0.03) | 0.26 (0.03) | 31.79 | <0.001 |
Right HPV, cm3 | 0.25 (0.03) | 0.28 (0.03) | 35.16 | <0.001 |
v CSF, cm3 | 3.52 (1.59) | 3.22 (1.50) | 28.72 | <0.001 |
WMH, cm3 | 0.85 (2.64) | 0.73 (2.01) | 9.33 | <0.001 |