An example of poor methodology is the cost for SMC given for every group. Seeing as SMC was the main control condition, and was a controllable variable, then the cost for SMC should be identical for each participant for each group, or roughly identical across groups. But, oh what a surprise, in table 3, the SMC-group costs for SMC are £358 whereas the other groups are £213-£230, which is as low as 59% of the costs for the SMC group. This is a large cost discrepancy, and a bias, that the investigators have consciously introduced into the study.