a) More information is required on the literature review.
b) There are some inaccuracies in the terminology used, since sometimes the cost-effectiveness ratio was called the cost-benefit ratio and the incremental-cost per life year was called cost-per life-year gained. This could confuse the reader.
c)The details on which the authors based their conclusions were not given.
d) As the authors themselves stressed, more data is needed to estimate several variables, such as the relative risk of collision in people affected by dementia.