Table 2 Sample characteristics of the UKBB data used in our study. We used t-test to test the group difference for BMI, Chi-square test to test the group difference for sex
Characteristic | Positive | Negative | Total | p-value* |
|---|---|---|---|---|
|  | n1 = 560 | n2 = 12,865 | n = 13,425 |  |
Age, median (range) | 71.57(45.65–81.82) | 64.52(45.46–81.19) | 64.83(45.46–81.82) | 1.50E-97 |
Sex: Female, No. (%) | 187(33) | 7172(56) | 7359(55) | 3.67E-25 |
Sex: Male, No. (%) | 373(67) | 5693(44) | 6066(45) | |
BMI, mean (SD) | 26.26(4.13) | 26.09(3.98) | 26.10(3.98) | 0.44 |
TAC_mean, mean (SD) | 39,079(10596) | 41,603(12144) | 41,498(12094) | 3.29E-06 |
TAC_sd, mean(SD) | 7970(4500) | 9042(6460) | 8997(6393) | 7.06E-05 |
MVPA_mean, mean(SD) | 89(45) | 99(51) | 99(51) | 2.07E-05 |
MVPA_sd, mean(SD) | 37(19) | 39(21) | 39(21) | 3.00E-02 |
PC1_mean, mean(SD) | 0.2677(9.21) | 0.0063(9.43) | 0.0172(9.42) | 0.52 |
PC1_sd, mean(SD) | 8.13(3.12) | 8.05(3.12) | 8.06(3.12) | 0.57 |
SPARE-AD index | 0.21(0.20) | −0.73(0.34) | −0.69(0.39) | 0.00E + 00 |