Table 1 Summary of characteristics of studies in the current meta-analysis.

From: A pilot meta-analysis on self-reported efficacy of neurofeedback for adolescents and adults with ADHD

Author (year)

Diagnosis (Criteria)

Design (Blinding)

Comparison

Session

N

Duration (weeks)

Outcome

IQ

Stimulant (%)

Age (range) (years)

Female (%)

Country

Barth (2021)

ADHD (DSM-IV)

RCT (No)

NF: SCP

30

26

26.64 FU: 6 M

ADHS-SB: Attention, global, hyperactivity and impulsivity

108.32

23.1

33.63 (18–56)

60.9

Germany

EMG-biofeedback

20

25

Schönenberg (2017)

ADHD (DSM-IV-TR)

RCT (Yes)

NF: TB

30

37

15 FU: 6 M

CAARS-self-rating: Attention, total, hyperactivity and impulsivity

N/A

16

37.8 (18–60)

44

Germany

Sham

38

11

Duric (2017)

Hyperkinetic disorder (ICD-10)

RCT (No)

NF: TB (theta/SMR)

30

30

12 FU: 6 M

Barkley’s Defiant Children-self-repot: Attention, total, hyperactivity

87.98

0

11.15 (6–18)

19.67

Norway

MPH

31

100

Bink (2016)

ADHD (DSM-IV-TR)

RCT (No)

NF: TB (theta/SMR)

37

45

25 FU: 1 year

1.ADHD rating- self-report: Inattention, H/I 2.Youth self-report: total

100.66

44

16.14 (12–24)

0

Netherlands

TAU

26

62

Steiner (2011)

ADHD (By physician)

RCT (No)

NF: TB

23.4

9

16 FU: N/A

CRS-R self-report: inattention, ADHD index, hyperactivity

N/A

60

12.4 (11–14)

47.8

US

Waiting list

15

  1. ADHD, Attention deficit and hyperactivity disorders; ADHS-SB German ADHD self-rating scale for symptoms in adulthood; CAARS Conners’ adult ADHD rating scale; CRS-R, Conners’ Rating Scale – revised; DSM-IV Diagnostic and Statistical Manual of Mental Disorders, fourth edition; DSM-IV-TR, Diagnostic and Statistical Manual of Mental Disorders, fourth edition, text revision; EMG electromyography; FU follow up; H/I, hyperactivity/impulsivity; ICD-10 International Classification of Diseases, Tenth Revision; IQ intelligence quotient; MPH, methylphenidate; M month; N, number; N/A not available; NF, neurofeedback; RCT randomized controlled trial; SCP slow cortical potentials; SMR, Sensorimotor rhythm; TAU, treatment as usual; TB, theta/beta training; yr year.