Table 1

Newcastle-Ottawa score for included cross-sectional studies

StudyRepresentativeness of the sampleSample sizeNon-respondentsAscertainment of the exposureComparability of subjects in different outcome groupsAssessment of the outcomeStatistical test is appropriateTotal scoreFunding source
Araujo2910010NA13No description
Barandarian4010000NA12No description
Bekfani4110010114No description
Kasner1900011114Supported by the EC, FP7-Health-2010, MEDIA (261409)
Lainscak4210010NA14No description
Nieto Sandoval2810000102No description
Nunez2210001114Sociedad Española de Cardiología
Orynchak2310000113No description
Yeo4310010NA14Vifor Pharma
Yeo2410010114No description
  • NA, not available.