The validated Newcastle Ottawa scale was used to assess the methodological quality of case control and cohort studies [ 6].
The etiology of de Quervain's tenosynovitis (dQ) has been based on conflicting small case series and cohort studies lacking methodological rigor.
Due to methodological limitations of previous case-control and cohort studies the definition of significant phenacetin use is not straightforward.
Furthermore, the findings were similar in subgroup analysis of RCTs, case control and cohort studies, although the methodological differences of original studies may introduce potential biases.
The methodological designs of the articles included prevalence studies, clinical trials, systematic reviews, case control studies, and cohort studies.
Selectivity and Cohort Quality.
However, directly comparing SMRs across countries is not appropriate because SMR differences may result from either methodological or cohort differences among these studies.
Our methodological longitudinal cohort design which excluded patients with cardiovascular disease, older adults (≥ 65 years of age), and underweight individuals at inception, allowed for obesity-related expenditures to be compared against normal weight controls from an inception point in which most individuals had yet developed disease-related complications.
The aim of this study was therefore to develop a tool to appraise the reporting quality and methodological quality of case series and cohorts of lower limb arthroplasty with emphasis on revision for aseptic prosthesis loosening by means of a Delphi approach.
We included original research studies with any methodological design including cohort studies, case controls, and randomized trials, as well as commentaries, narrative reviews, letters to the editor, and abstracts in peer-reviewed journals that reported models for care review.
