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Table 6 Statistical comparisons between patients with apathy, patients without apathy, and normal controls on tests for the perception of facial expressions of emotion

From: Exploring social cognition in patients with apathy following acquired brain damage

Emotion

Kruskal-Walis test result

Post hoc comparisons

Bonferroni correction = 0.0167

EKMAN 60

H(2) = 34.82, p < 0.001

C vs A U = 52.5, p < 0.001, r = −.71*

C vs NA U = 51.5, p < 0.001, r = −.61*

A vs NA U = 140.5, ns, r = −.04

Anger

H(2) = 17.95, p < 0.001

C vs A U = 165, p < 0.001, r = −.46*

C vs NA U = 84, p < 0.001, r = −.51*

A vs NA U = 134, ns, r = −.08

Disgust

H(2) = 22.71, p < 0.001

C vs A U = 127.5, p < 0.001, r = −.55*

C vs NA U = 78.5, p < 0.001, r = − .51*

A vs NA U = 125.5, ns, r = −.12

Fear

H(2) = 16.78, p < 0.001

C vs A U = 143.5, p < 0.001, r = −.5*

C vs NA U = 170, p < 0.01, r = −.46*

A vs NA U = 126, ns, r = −.12

Happiness

H(2) = 9.21, p < 0.05

C vs A U = 289, p < 0.01, r = −.35*

C vs NA U = 170, p < 0.01, r = −.46*

A vs NA U = 136, ns, r = −.09

Sadness

H(2) = 15,47, p < 0.001

C vs A U = 213, p = 0.01, r = −.35*

C vs NA U = 87.5, p < 0.001, r = −.51*

A vs NA U = 92.5, ns, r = .32

Surprise

H(2) = 9.27, p < 0.01.

C vs A U = 208.5, p < 0.01, r = −.35*

C vs NA U = 137, p < 0.01, r = −.34*

A vs NA U = 146, ns, r = −.001

EMOTION HEXAGON

H(2) = 26.11, p < 0.001

C vs A U = 45, p < 0.01, r = −.71*

C vs NA U = 57.5, p < 0.01, r = −.54*

A vs NA U = 127, ns, r = −.02

Anger

H(2) = 26.11, p < 0.001

C vs A U = 97, p < 0.01, r = −.55*

C vs NA U = 71, p < 0.01, r = −.48*

A vs NA U = 130, ns, r = 0

Disgust

H(2) = 8.22, p < 0.05

C vs A U = 116, ns, r = −.09

C vs NA U = 92.5, p = 0.015, r = − .39*

A vs NA U = 116, ns, r = −.09

Fear

H(2) = 23.06, p < 0.001

C vs A U = 67, p < 0.01, r = −.64*

C vs NA U = 59.5, p < 0.01, r = −.53*

A vs NA U = 108, ns, r = −.14

Happiness

H(2) = 9.38, p < 0.01

C vs A U = 160, p < 0.01, r = −.44*

C vs NA U = 143, ns, r = −.22

A vs NA U = 95, ns, r = −.25

Sadness

H(2) = 27.39, p < 0.001

C vs A U = 72, p < 0.01, r = −.65*

C vs NA U = 31.5, p < 0.01, r = −.69*

A vs NA U = 107, ns, r = −.15

Surprise

H(2) = 6.69, p < 0.05

C vs A U = 167, ns, r = −.33

C vs NA U = 107, p < 0.01, r = −.32*

A vs NA U = 120, ns, r = −.06

  1. A, Patients with Apathy; NA, Patients without Apathy; C, Healthy controls.
  2. *Between groups difference is significant.