Fig 1.
Data selection procedure according to our requirements and number of papers fulfilling the respective requirements.
Table 1.
Selected papers.
Table 2.
Which statistical methods were used by the papers?.
Table 3.
Which software was used by the papers?.
Table 4.
Were the results reproducible?.
Fig 2.
Original and reproduced model parameter estimates for the ewbGEE model of article [15].
In this article the differences in parameters do not lead to a different interpretation.