Crossover or parallel design in infertility trials? The discussion continues.B J Cohlen, Egbert R. te Velde, Caspar W. N. Looman, Rene Eijckemans, J. Dik F. HabbemaFertility and sterility1998OBJECTIVE To determine whether a crossover design results in a different estimate of treatment effect compared with a parallel design. DESIGN With the aid of a computer program, data sets of… (More)
Life-table analysis falls short of the mark!Pieternel Steures, Peter G. A. Hompes, Jan Willem van der Steeg, Rene Eijckemans, Ben W. J. MolFertility and sterility2003