Table 2.

Correlation between sensor-derived parameters and the cognitive status of participants measured by Mini-Mental State Examination (MMSE).

Correlation, rho (p-Value) †
Sleep Parameters
Time in Bed, h	0.24(0.002) *
Sleep Onset Latency, min	−0.10(0.201)
Total Sleep Time, h	0.26(0.001) *
Sleep Efficiency, %	0.12(0.129)
Sleep Supine, %	0.05(0.489)
Sleep Prone, %	−0.10(0.095)
Sleep Sides, %	0.21(0.007) *
Physical Activity
Sedentary, h	−0.29(0.000) *
Sedentary, %	−0.30(0.000) *
Light, h	0.24(0.003) *
Light, %	0.28(0.000) *
Moderate-to-Vigorous, min	0.29(0.000) *
Moderate-to-Vigorous, %	0.27(0.001) *
Sitting, %	0.01(0.829)
Standing, %	0.19(0.020) *
Walking, %	0.34(0.000) *
Lying, %	−0.10(0.050) *
Number of Steps, 1K	0.33(0.000) *

^† = measured by Spearman Correlation coefficients; * = the parameters with p-value < 0.050; 1K = 1000.