Assessment of the methodological quality of systematic reviews and meta-analyses published in OA and non-OA journals using the Assessment of Multiple Systematic Reviews Scale (AMSTAR).

<p>Assessment of the methodological quality of systematic reviews and meta-analyses published in OA and non-OA journals using the Assessment of Multiple Systematic Reviews Scale (AMSTAR).</p

Proportion of adequate reporting according to the STROBE checklist of the case-control and cohort studies published in OA and non-OA journals using the STrengthening the Reporting of OBservational studies in Epidemiology (STROBE).

<p>Proportion of adequate reporting according to the STROBE checklist of the case-control and cohort studies published in OA and non-OA journals using the STrengthening the Reporting of OBservational studies in Epidemiology (STROBE).</p

Characteristics of the 85 studies evaluated published in oncology journals in 2013.

<p>Characteristics of the 85 studies evaluated published in oncology journals in 2013.</p

The search strategy and identification process of oncology journals and appraised studies.

<p>The search strategy and identification process of oncology journals and appraised studies.</p

Assessment of the methodological quality of case-control and cohort studies published in OA and non-OA journals using the Newcastle and Ottawa Scale (NOS).

<p>Assessment of the methodological quality of case-control and cohort studies published in OA and non-OA journals using the Newcastle and Ottawa Scale (NOS).</p

Proportion of adequate reporting according to the Preferred Reporting Items for Systematic reviews and Meta-Analysis (PRISMA) checklist of the systematic reviews and meta-analyses published in OA and non-OA journals.

<p>Proportion of adequate reporting according to the Preferred Reporting Items for Systematic reviews and Meta-Analysis (PRISMA) checklist of the systematic reviews and meta-analyses published in OA and non-OA journals.</p