| De Almeida Neto, A.C. 2001 Study 5 | De Almeida Neto, A.C. 2001 Study 5A | Egen, V. 2003 | Guirguis, L.M. 2007 | Koster, E.S. 2014 | Martin, B.A. 2010 | Puumalainen, I. 2005 | Thornley, T. 2006 | |
---|---|---|---|---|---|---|---|---|---|
Selection | Representativeness of the exposed cohort | – | – | * | – | – | – | * | * |
Selection of the non-exposed cohort | * | * | * | * | * | * | * | * | |
Ascertainment of the exposure | * | * | * | – | * | – | – | * | |
Demonstration that outcome of interest was not present at start of the study | * | * | * | – | * | * | – | – | |
Comparability | Comparability of cohorts on the basis of the design or analysis | Â | Â | Â | Â | Â | Â | Â | Â |
Outcome | Assessment of outcome | * | * | * | – | * | – | – | * |
Was follow-up long enough for outcomes to occur | – | – | * | * | * | * | – | – | |
Adequacy of follow-up cohorts | – | – | * | – | – | – | – | – |