Only seven trials reported no withdrawals (Ma 2007; Nawaz 2002; Scholander 1968; Sukhai 1989#; Tuncel 2014; Tuygun 2007; Wagner 1985). In research with identified withdrawals, analyses have been carried out according to the reported results, which usually excluded dropouts. However, in two studies, dropouts were clearly related to the treatment group and treated as failures […]