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Table 2 Overview of the significant correlations and associations between indices for the entire sample

From: Does the diurnal cycle of cortisol explain the relationship between physical performance and cognitive function in older adults?

Dependent variable Independent variable Correlation Regression
r P Adj. R2 ∆R2 F P β P
MMSE 8MWT .733 .000b .528 .261 12.855 .000b .621 .000b
6MWT −.743 .000b .587 .314 16.040 .000b −.639 .000b
30SCST −.733 .000b .566 .297 14.574 .000b −.615 .000b
TGUG .770 .000b .590 .318 16.285 .000b .691 .000b
VarianceAll −.315 .023a .302 .061 5.330 .001a −.254 .043a
TMT-At 8MWT .589 .000b .350 .096 6.383 000b .377 .009b
6MWT −.630 .000b .378 .120 7.082 000b −.398 .003b
30SCST −696 .000b .499 .232 10.544 000b −.544 .000b
TGUG .720 .000b .429 .168 8.526 000b .502 .000b
TMT-Bt 8MWT .391 .010a .233 .127 3.489 .011a .433 .013a
6MWT .447 .003b .274 .163 4.090 .005a −.460 .004b
30SCST .470 .002b .306 .195 4.440 .003b −.499 .002b
TGUG .484 .001b .324 .207 4.931 .002b .558 .001b
TMTB-A 8MWT .628 .000b .360 .194 5.284 .001b .535 .002b
6MWT −.617 .000b .356 .190 5.198 .001b −.497 .002b
30SCST −.575 .000b .314 .158 4.295 .004b −.450 .007b
TGUG .698 .000b .451 .272 7.243 .000b .640 .000b
8MWT VarianceAll −.316 .024a       
6MWT VarianceAll .332 .017a .046 .080 1.484 .214 .322 .047a
  1. Adj. R 2 = adjusted R2, ∆R2 = R2 change
  2. aSignificant at the .05 level
  3. bSignificant at the .01 level