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Table 1 Variability of BD symptoms and stressors between BD and HC groups over the 14-day period

From: Use of ecological momentary assessment to detect variability in mood, sleep and stress in bipolar disorder

 

ICC

Estimates of group effect on within-person variability (α1)

p-value for group effect on within-person variabilitya

Estimates of between-group difference the mean level of symptoms or stressors (γ01)

p-value for between-group difference in the mean level of symptoms or stressorsb

Mood

 BD

0.55

0.86

< 0.0001

− 18.42

0.015

 HC

0.72

    

Energy

 BD

0.49

1.02

< 0.0001

− 20.99

0.006

 HC

0.61

    

Speed of thoughts

 BD

0.40

1.73

< 0.0001

− 0.10

0.99

 HC

0.67

    

Impulsivity

 BD

0.16

0.89

< 0.0001

13.42

0.07

 HC

0.68

    

Pain

 BD

0.80

1.64

< 0.0001

38.75

0.001

 HC

0.40

    

Social stress

 BD

0.20

0.03

0.85

0.61

0.06

 HC

0.02

    

Perception of skill

 BD

0.23

0.65

< 0.0001

0.84

0.05

 HC

0.54

    

Effort

 BD

0.12

0.10

0.50

0.28

0.53

 HC

0.23

    

Preference of tasks

 BD

0.13

0.06

0.68

0.48

0.17

 HC

0.11

    

Sleep (h)

 BD

0.46

0.73

< 0.0001

− 0.67

0.27

 HC

0.30

    
  1. ICC intraclass correlation coefficient
  2. aThe p-values for group effect on within-person variability
  3. bThe p-values for between-group difference in the mean level of symptoms or stressors. Significant results are in italic