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Table 3 Sex-specific direct and indirect relationship between depressive symptoms and cognitive functioning through BMI

From: Age and sex-specific associations between depressive symptoms, body mass index and cognitive functioning among Korean middle-aged and older adults: a cross-sectional analysis

Variables Mediator Outcome
BMI Cognitive Functioning
\(\beta\) SE t p \(\beta\) SE t p
CES-D × Sexa1 -0.053** 0.025 -2.105 0.035     
Sexa1 -0.115 0.109 -1.051 0.294     
CES-D -0.016 0.017 -0.916 0.360 -0.297** 0.022 -13.833 0.000
BMI      0.076** 0.021 3.549 0.000
Covariates
 Age -0.037** 0.005 -7.584 0.000 -0.190** 0.008 -24.637 0.000
 Family incomeb 0.060 0.046 1.292 0.197 0.293** 0.074 3.963 0.000
 ADL -0.115** 0.045 -2.560 0.011 -1.800** 0.072 -24.993 0.000
 Marrieda2 0.006 0.094 0.065 0.948 0.908** 0.144 6.327 0.000
 Meet friendsa3 -0.111 0.095 -1.173 0.241 1.632** 0.152 10.745 0.000
 Good healtha4 -0.280** 0.086 -3.251 0.001 0.682** 0.138 4.946 0.000
 Regular exercisea5 0.147* 0.077 1.902 0.057 1.196** 0.124 9.681 0.000
  R2 = 0.026, F (10, 5608) = 14.830, p < .000 R2 = 0.402, F (9, 5609) = 418.371, p < 0.000
  Indirect relationship between Depressive Symptoms and Cognitive Function through BMI
 Sex Estimate SE 95% LLCI 95% ULCI
 Women -0.001 0.002 -0.005 0.002
 Men -0.005** 0.002 -0.010 -0.002
  The Difference in Indirect relationship across Men and Women
  Estimated difference SE 95% LLCI 95% ULCI
 Men-Women -0.0040** 0.0024 -0.0094 -0.0001
  1. Abbreviations: SE Standard errors, t is t-statistics and p is the corresponding p-value
  2. aDummy variable indicating group: 1 = Men; 2 = Currently married with a living spouse; 3 = Meet friends at least once a month; 4 = have a good health status; 5 = Exercise regularly
  3. bLogarithm of family income is used in the estimation model
  4. Standard errors are bootstrapped using 5,000 bootstrap replications
  5. ** p < 0.05; * p < 0.10