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Table 3 Descriptive and Kruskal–Wallis results for SIB, SIB + SMD, and control subgroups

From: Salivary biomarkers of HPA axis and autonomic activity in adults with intellectual disability with and without stereotyped and self-injurious behavior disorders

Variable

SIB

SIB + SMD

Control

χ2 (df)

p Value

α-Amylase

   

7.68 (2)

0.021

n

18

16

17

  

M (SD)

88.1 (87.4)

134.7 (62.8)

127.9 (126.9)

  

CV

1.01

2.14

1.01

  

Cortisol

   

6.39 (2)

0.041

n

18

16

17

  

M (SD)

5.7 (16.1)

5.0 (14.4)

1.88 (5.12)

  

CV

0.35

0.35

0.37