Multiple logistic regression analysis showing the association between decline in cognitive performance (dependent variable) and gait performance (independent variable) adjusted for participants' baseline characteristics (n = 934).

OR: odds ratio; CI: confidence interval;*: abnormal score on the Short Mini-Mental State Examination (score  =  5); †: abnormal score on the clock drawing test; ‡: participants with abnormal score on the Short Mini-Mental State Examination and the clock-drawing test; ¶: measured at steady state walking with GAITRite system; #: stride-to-stride variability of stride time measured at steady state walking with GAITRite system; §: calculated from the formula (Timed up & Go realized – Timed up & Go imagined/((Timed up & Go realized – Timed up & Go imagined)/2) ×100; P-value significant (i.e., <0.05) indicated in bold; all models are adjusted on participants' baseline characteristics (i.e., age, gender, number of drugs used per day, use of psychoactive drugs, depression symptoms, body mass index, lower-limb proprioception, distance vision score and handgrip strength).