For recovery time and stabilization time, highly related to availability, we based our classification on the results shown in [27] (implying that our grading of these attributes is mostly limited to their particular study and should be taken with apprpriate care).
We based our classification on the anatomical compartment involved by the neurogenic HO and not on its volume because we believe that the volume of HO is only related to the reduction in the range of motion or ankylosis and ease of surgical excision, not to the choice of surgical approach or the outcome of neurogenic HO.
We have based our classification on the definitions, as shown in table 1.
We followed a concept developed for frugivorous birds [37], and based our classification on the consensus that only bats of the family Phyllostomidae feed on fruits in the Neotropics, and that phyllostomids of the subfamilies Carolliinae and Stenodermatinae depend strongly on fruits for living (category "primary").
We based our classification on the classification used by Landrigan et al 15 in their study.
We chose to base our classification on job title which should be less prone to recall bias.
We decided to base our classification on technical sophistication and complexity of surgical procedures because this principle of classification is independent of complex factors such as the individual patients' treatment needs or surgeons' preferences, thus rendering our system more practical and suitable for the purposes of scientific research.
However, in our opinion, basing our classification on definitions in table 1, and analysing active controls separately from non-active controls provided a more precise estimate of the efficacy of cognitive interventions, than when all studies are included in the same meta-analysis irrespective of the type of control group.
Basing our classification on register data and death certificates only, an overestimation of maternal deaths through misclassification could not be ruled out.
We based our myosin classification exclusively on phylogenetic affinity, which allowed us to identify: gene and domain loss, paralog groups, and convergent evolution of gene domain architecture.
