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Table 2 Summary statistics for interview and diary subscales, and the results to Spearman's correlations (in order of strength)

From: The feasibility and validity of ambulatory self-report of psychotic symptoms using a smartphone software application

 

Chronbach's alpha

Diary scores

Interview scores

Correlation between interview and diary scores

Questions:

 

Min

Max

Mean

SD

Min

Max

Mean

SD

rho

p-value

Hopelessness (CDS)

0.87

1.0

6.7

3.3

1.5

1.0

3.0

1.8

0.8

0.80

p <.001

Delusions

0.93

1.0

5.3

2.0

1.3

1.0

5.0

2.6

1.3

0.74

p <.001

Anxiety

0.96

1.0

6.0

2.7

1.5

1.0

5.0

3.0

1.1

0.69

p < .001

Hallucinations

0.96

1.0

6.4

2.6

1.7

1.0

5.0

2.4

1.5

0.68

p < .001

Suspiciousness

0.95

1.0

6.2

1.0

6.2

1.0

5.0

2.5

1.3

0.63

p <.001

Grandiosity

0.76

1.0

4.2

2.0

1.1

1.0

4.0

1.5

1.0

0.53

p <.001

Depression

0.83

1.1

5.9

3.4

1.2

1.0

4.0

3.0

1.2

0.45*

0.006*

Guilt

0.95

1.0

5.7

2.0

1.2

1.0

5.0

1.7

1.1

0.44

0.006

Somatic concern

0.96

1.0

7.0

3.1

2.1

1.0

5.0

1.7

1.1

0.39

0.019

Passive apathetic social withdrawal

0.93

1.0

6.9

4.1

1.6

1.0

3.0

1.8

0.9

0.26

0.131

Hostility

0.86

1.0

5.0

2.4

1.2

1.0

7.0

1.9

1.2

0.25

0.145

Excitement

0.89

1.0

6.8

3.7

1.7

1.0

4.0

1.5

0.9

0.06

0.712

Conceptual disorganisation

0.95

1.0

5.0

2.0

1.1

1.0

3.0

1.6

0.8

-0.04

0.832

  1. *Represents correlation with item G6 on the PANSS. Correlation with item 1 on the CDS (mean = 2, SD = .7, Min = 1, Max = 4) was rho = .50, p = .002
  2. Min = minimum, Max = maximum, SD = standard deviation, PANSS = Positive and Negative Syndrome Scale, CDS = Calgary Depression Scale.