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Table 2 Description of quality criteria and scoring for selected studies

From: A critical review of manual therapy use for headache disorders: prevalence, profiles, motivations, communication and self-reported effectiveness

Dimensions of Quality Assessment

Points Awarded†

Methodology

 A. Sampling strategy reported/appropriate to study design

1

 B. Sample size >100

1

 C. Response rate >75%

1

 D. Low recall bias (prospective data collection or retrospective data collection within past 12 months)

1

Reporting of Participants characteristics

 E. Classification of migraine or headache type(s) reported

1

 F. Age and sex

1

 G. Ethnicity

1

 H. Indicator of socioeconomic status (income, education)

1

Reporting of relevant MT factors

 I. Reporting of MT use for headache

1

 J. Reporting of MT financial costs

1

  1. †Maximum score of 10 points for studies applicable to this scoring system with each item weighted equally with 0 (criterion not fulfilled) or 1 (criterion fulfilled) point