Table 2 Main effects of stimulation site, protocol and age group on CHEP parameters and multiple comparisons of stimulation sites.

From: Normative data of contact heat evoked potentials from the lower extremities

 

Main Effect

Multiple Comparisons

Protocol Effect

Dermatome Effect

Age Group Effect

Comparison

Normal Baseline

Increased Baseline

F

p

F

p

F

p

Estimate

p

Estimate

p

N2 lat [ms]

1817.0

<0.001

141.3

<0.001

4.7

<0.05

L5 vs. L2

+51

<0.001

+47

<0.001

S2 vs. L2

+13

<0.01

+7

>0.05

S2 vs. L5

−38

<0.001

−40

<0.001

N2P2 amp [log(µV)]

121.1

<0.001

31.7

<0.001

19.0

<0.001

L5 vs. L2

−0.18

<0.01

− 0.17

<0.001

S2 vs. L2

+0.08

>0.05

+0.10

<0.05

S2 vs. L5

+0.26

<0.001

+0.27

<0.001

NRS

304.9

<0.001

138.3

<0.001

0.2

>0.05

L5 vs. L2

−1.4

<0.001

−1.1

<0.001

S2 vs. L2

+0.5

<0.01

+0.3

>0.05

S2 vs. L5

+1.8

<0.001

+1.4

<0.001

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