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Table 1 Literature search and study characteristic

From: Effect of cognitive-behavior therapy for children with functional abdominal pain: a meta-analysis

Author, year

Country

Patients

Treatment

Type of Intervention

Duration

Outcome

Assessments

Sample size

Gender

Intervention

Control

Intervention

Control

Cunningham, 2022

USA

9–14 y

CBT + TAU

TAU

In-person + Web-based

6 sessions, 8 weeks

FDI, VAS, SCARED, CDI

T0: baseline T1: 8 weeks

40

39

32 m, 47 f

Duarte, 2006

Brazil

5–14 y

CBT + TAU

TAU

In-person

4 sessions, 4 months

VAS

After each session

15

17

10 m, 22 f

Grob, 2013

Germany

7–12 y

CBT

TAU

In-person

6 sessions, 6 weeks

KINDL-R, VAS, PedsQL

T0: baseline T1: after treatment T2: 3 months

15

14

4 m, 25 f

Levy, 2010

USA

7–17 y

CBT + TAU

Education + TAU

In-person

3 sessions, 3 weeks

FPSR, CSI, FDI, CDI, PRI

T0: baseline T1: after treatment T2: 3 months T3: 6 months

100

100

55 m, 145 f

Levy, 2017a

USA

7–12 y

CBT + TAU

Education + TAU

In-person

3 sessions, 3 weeks

API, FDI, PBCL, CSI, PedsQL, PRI

T0: baseline T1: 1 week after treatment T2: 3 months T3: 6 months

107

55

112 m, 204 f

Levy, 2017b

USA

7–12 y

CBT + TAU

Education + TAU

Phone

3 sessions, 3 weeks

API, FDI, PBCL, CSI, PedsQL, PRI

T0: baseline T1: 1 week after treatment T2: 3 months T3: 6 months

100

54

Palermo, 2009

USA

11–17 y

CBT + TAU

TAU

Web-based

6 sessions, 6 weeks

CALI, NRS, RCADS

T0: baseline T1: 3-month

26

22

13 m, 35 f

Palermo, 2016

USA

11–17 y

CBT + TAU

Education + TAU

Web-based

8 sessions, 8 weeks

CALI, NRS, BAQP

T0: baseline T1: after treatment T2: 6-month

138

135

68 m, 205 f

Robins, 2005

USA

6–16 y

CBT + TAU

TAU

In-person

5 sessions, 10 months

API, CSI, FDI

T0: baseline T1: after treatment

40

29

30 m, 39 f

Van der veek, 2013

Netherlands

8–17 y

CBT

Intensive medical care

In-person

6 sessions, 6 weeks

API, CSI, FDI, RCADS, KIDSCREEN-

27, ADIS

T0: baseline T1: 2 weeks after treatment T2: 6 months

52

52

29 m, 75 f

Warner, 2011

USA

8–16 y

CBT

TAU

In-person

12 sessions, 10 weeks

Self-reported pain scale, CSI

T0: baseline T1: after treatment

20

17

14 m, 26 f

  1. CBT: cognitive behavior treatment, TAU: treatment as usual, FDI: functional disability inventory, VAS: visual analog scale, SCARED: Screen for child anxiety related disorders, API: abdominal pain index, FPSR: face pain scale-revised, PedsQL: Pediatric quality of life inventory, PRI: Pain response inventory, CDI: Children’s depression inventory, CALI: child activity limitations interview, NRS: numerical rating scale, BAPQ: Bath Adolescent Pain Questionnaire, RCADS: Revised child anxiety and depression scale, ASWS: adolescent sleep wake scale, CSI: child somatization inventory, PBCI: Pain behavior check list, MASC: multidimensional anxiety scale for children