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Table 2 Screening parameters, according to the prevalence checklist of related JBI critical appraisal tool and the resulting score for risk of bias of each. Question codes (Q): Q1—Was the sample frame appropriate to address the target population? Q2—Were study participants sampled in an appropriate way? Q3—Was the sample size adequate? Q4—Were the study subjects and the setting described in detail? Q5—Was the data analyses conducted with sufficient coverage of the identified sample? Q6—Were valid methods used for the identification of the condition? Q7—Was the condition measured in a standard, reliable way for all participants? Q8—Was there appropriate statistical analysis? Q9—Was the response rate adequate, and if it, was the low response rate managed appropriately?

From: Primary headache epidemiology in children and adolescents: a systematic review and meta-analysis

 

Q1 (sample frame)

Q2 (sampling)

Q3 (sample size)

Q4 (description of subjects and setting)

Q5 (coverage)

Q6 (identification of condition)

Q7 (measurements)

Q8 (statistics)

Q9 (response rate)

TOTAL SCORE

Akyol A, 2007 [14]

X

X

X

X

X

4

Albashtawy M, 2019 [15]

X

X

X

6

Alp R, 2010 [16]

X

X

7

Ando N, 2007 [17]

X

X

X

X

5

Anttila P, 2002 [18]

X

X

X

6

Assadi M, 2012 [19]

X

X

X

X

5

Ayatollahi SMT, 2002 [50]

X

X

X

X

5

Barea LM, 1996 [20]

X

X

X

6

Bektaş O, 2015 [21]

X

X

7

Bigal ME, 2007 [51]

X

X

X

X

5

Blaschek A, 2012 [22]

X

X

X

X

5

Bugdayci R, 2005 [23]

X

X

7

Buse DC, 2013 [52]

X

X

X

X

5

Buse DC, 2012

X

X

7

Cerutti R, 2016 [24]

X

X

X

X

5

Cvetković VV, 2014 [25]

X

X

X

6

Ezeala-Adikaibe B, 2017 [26]

X

X

X

X

X

4

Fallahzadeh H, 2011 [53]

X

X

7

Fendrich K, 2007 [27]

X

X

X

X

5

Fuh JL, 2010 [28]

X

X

X

X

X

4

Gupta R, 2008 [29]

X

X

X

X

X

4

Heinrich M, 2009 [30]

X

X

X

X

X

4

Hommer R, 2022 [31]

X

X

7

Kaltseis K, 2022 [32]

X

X

X

X

5

Kawatu N, 2022 [33]

X

X

X

X

5

Krogh AB, 2015 [34]

X

X

X

X

X

4

Lateef T, 2019 [35]

X

X

7

Lipton RB, 2011 [36]

X

X

7

Liu HY, 2012 [37]

X

X

X

X

X

4

Lu S, 2000 [38]

X

X

X

6

Luvsanrov O, 2020 [39]

X

X

7

Malik HA, 2012 [40]

X

X

X

X

5

Ofovwe G, 2010 [41]

X

X

X

X

5

Philipp J, 2019 [42]

X

X

X

X

X

4

Pothrnann R, 1994 [43]

X

X

X

6

Raieli V, 1995 [44]

X

X

X

X

X

4

Rocha-Filho P, 2014 [54]

X

X

X

X

5

Saengow V, 2018 [55]

X

X

X

X

X

4

Togha M, 2022 [46]

X

8

Torres-Ferrus M, 2019 [47]

X

X

7

Turkdogan D, 2006 [45]

X

X

X

X

5

Unalp A, 2007 [56]

X

X

X

X

5

Waldie KE, 2014 [48]

X

X

X

X

5

Wang SJ, 2006 [57]

X

X

7

Wang SJ, 2009 [58]

X

X

X

X

5

Zewde YZ, 2020 [59]

X

X

7

Zwart JA, 2003 [49]

X

X

X

6

Ylmaz M, 2013 [60]

X

X

X

X

5