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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Alzheimer Dis Assoc Disord. 2014 Apr-Jun;28(2):145–150. doi: 10.1097/WAD.0000000000000010

Table 3.

Means and standard deviations of objective sleep measures across groups. p<0.05 for aMCI<naMCI; *p<0.001 for aMCI<intact, naMCI; and §p<0.001 for naMCI>intact, aMCI. All p-values after correction for multiple comparisons. Numbers of participants in each group are shown in parentheses.

Measure Intact (29) aMCI (6) naMCI (10)
‡ Movement in Bed (MIB, in sensor firings) 9.40 +/- 0.40 7.81 +/- 0.88 10.85 +/- 0.68
* Wake After Sleep Onset (WASO, in mins) 27.22 +/- 1.19 13.51 +/- 2.62 20.64 +/- 2.02
Total Sleep Time (TST, in hours) 8.34 +/- 0.04 8.50 +/- 0.09 8.45 +/- 0.07
§ Settling Time (mins) 2.5 +/- 0.07 2.32 +/- 0.15 3.07 +/- 0.11
* Times Up at night (# times) 2.08 +/- 0.04 1.63 +/- 0.10 1.89 +/- 0.08