Table 4: The results of the Double Stance Test (DT). Each variable in the first column is identified by a compound name which includes the eye condition and the name of the basic variable.

VariablesEyesUnitSexMean ± SDP level*
65–74 yrs75–84 yrs

EO_SIOpen%Women95.87 ± 1.7695.23 ± 1.95<0.01
Men95.83 ± 1.2095.41 ± 1.28<0.005

EC_SIClosed%Women94.28 ± 6.0092.79 ± 4.94<0.05
Men94.23 ± 1.6493.28 ± 4.04<0.05

EO_PIxyOpenDegreesWomen0.45 ± 0.140.54 ± 0.22<0.001
Men0.46 ± 0.130.51 ± 0.15<0.005

EC_PIxyClosedDegreesWomen0.58 ± 0.170.78 ± 0.47<0.001
Men0.65 ± 0.190.73 ± 0.26<0.01

EO: Eyes open; EC: Eyes closed; SI: Stability index; PIxy: Postural cone amplitude. The best trial, in the same eye condition, is considered. *significance level according to t-test.