Skip to main content

Table 3 Levene’s test (statistics based on means) of variances equality between LEI and SP (geographical region) and stroke and control participants (participants type)

From: Pooling data from different populations: should there be regional differences in cerebral haemodynamics?

  Geographical Region Participants Type
F p value F p value
CBFv, cm.s−1 0.721 0.399 0.195 0.662
CrCP, mm Hg 4.276 0.080 3.153 0.091
RAP, mmHg.s.cm− 1 1.496 0.230 2.231 0.120
Coherence VLF range 2.099 0.493 2.443 0.407
Coherence LF range 1.727 0.610 1.987 0.540
Coherence HF range 0.929 0.703 1.592 0.622
Normalized gain VLF range, % mm Hg− 1 0.331 0.901 0.486 0.838
Normalized gain LF range, % mm Hg− 1 0.297 0.882 3.089 0.567
Normalized gain HF range, % mm Hg−1 3.921 0.098 3.444 0.612
Phase VLF range, radians 2.982 0.801 2.491 0.475
Phase LF range, radians 2.001 0.712 1.984 0.399
Phase HF range, radians 2.665 0.723 2.091 0.523
ARI 0.078 0.762 0.510 0.950
  1. CBFv Cerebral blood flow velocity, CrCP Critical closing pressure, RAP Resistance Area Product, VLF, LF, HF Very low, low and high frequency ranges, respectively