Skip to main content

Table 3 Multiple linear regressions between REM sleep characteristics and basal forebrain volume in subsamples stratified by cognitive status

From: REM sleep is associated with the volume of the cholinergic basal forebrain in aMCI individuals

Dependent Variable

Independent variables

Unstandardized coefficient (95% CI)

Standard Error

Standardized coefficient

Punc

PFDR-corrected

Cognitively unimpaired participants

 Ch1-2–3 volume

REM-S percentage

-0.19 (-1.13 – 0.75)

0.46

-0.06

0.68

 

REM-S latency

-16.68 (-37.39 – 4.04)

10.08

-0.21

0.11

 

REM-S efficiency

-0.31 (-0.7 – 0.09)

0.19

-0.22

0.12

 

 Ch4 volume

REM-S percentage

5.4e−4 (-0.002 – 0.003)

0.001

0.07

0.70

 

REM-S latency

-0.06 (-0.12 – 0.005)

0.03

-0.28

0.07

 

REM-S efficiency

-9.3e−5 (-0.001 – 0.001)

6.2e−4

-0.03

0.88

 

 Total BF volume

REM-S percentage

0.19 (-2.05 – 2.43)

1.09

0.03

0.86

 

REM-S latency

-52.17 (-99.75 – -4.59)

23.15

-0.29

0.03

0.09

REM-S efficiency

-0.38 (-1.36 – 0.6)

0.48

-0.12

0.43

 

aMCI participants

 Ch1-2–3 volume

REM-S percentage

0.68 (-0.63 – 1.99)

0.64

0.19

0.3

 

REM-S latency

1.69 (-20.62 – 24)

10.85

0.03

0.88

 

REM-S efficiency

0.15 (-0.38 – 0.69)

0.26

0.1

0.56

 

 Ch4 volume

REM-S percentage

0.006 (0.001 – 0.01)

0.002

0.48

0.012

0.036

REM-S latency

-0.02 (-0.11 – 0.06)

0.04

-0.11

0.55

 

REM-S efficiency

7.5e−5 (-0.001 – 0.003)

9.5e−4

0.15

0.44

 

 Total BF volume

REM-S percentage

4.31 (0.93 – 7.68)

1.64

0.44

0.014

0.042

REM-S latency

-14.4 (-77.61 – 48.81)

30.75

-0.08

0.64

 

REM-S efficiency

0.54 (-0.99 – 2.06)

0.74

0.14

0.48

 
  1. Results of multiple regressions performed separately within each group, with REM sleep variables (i.e., REM sleep percentage, latency and efficiency) as predictors, and the volume of BF subregions (i.e., Ch1-2–3, Ch4 and the total BF) as outcomes, controlling for age, sex and the total intracranial volume. Results indicated in bold survive an FDR correction for multiple comparisons
  2. Abbreviations: aMCI amnestic Mild Cognitive Impairment, BF basal forebrain, CI confidence interval, FDR false discovery rate, REM rapid eye movement