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Table 2 Characteristics of somatic and psychological (including coping) time series used in the diary study

From: Pain and psyche in a patient with irritable bowel syndrome: chicken or egg? A time series case report

 

Min

Max

Med

M

S

Lag AC

P ADF

Somatic variables

Abdominal Pain (AP)

1

90

6.5

11.10

15.90

10

.03

IBS Associated Daily Impairment (DI)

1

87

8.5

14.35

18.55

1

.01

Psychological variables

Nervousness (N)

1

86

10.5

14.40

14.75

1

.02

Tension (T)

1

81

5.0

8.24

11.59

–

.01

Depressiveness (D)

1

30

2.0

4.06

4.42

1

.03

Pain-associated discomfort (PD)

1

91

6.0

11.99

17.51

10

.02

Coping strategies

Catastrophizing (C)

1

75

1.0

5.13

10.76

–

.01

Hopelessness (H)

1

84

1.0

8.46

16.71

–

.03

Coping: Positive thoughts (CPT)

1

95

1.0

33.32

37.25

7

.04

Coping: Imagining pain outside the body (CIP)

1

74

1.0

3.96

12.27

9

.01

  1. Med, Median; M, Mean; S, Standard Deviation; Lag AC, lag number with significant autocorrelation; P ADF, p value of the Augmented Dickey–Fuller test with the alternative hypothesis “time series is stationary”. All the variables are quantified on a 1–101 numeric scale. For AP, DI, N, T, D, PD, C, and H a higher score reflects higher somatic or psychological burden. For CPT and CIP, a higher score reflects an increased use of coping strategies
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BMC Gastroenterology

ISSN: 1471-230X

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