The statistical results (Overall Accuracy = 0.872; Kappa index = 0.745) validated the efficiency of the methodology although the spatial resolution of Landsat images limited the detection of very small and linear reservoirs.
The approximated IVDG was shown to correlate well with original IDVG (the calculated volume using their original multi-sampling methodology), although the two values are not interchangeable.
In terms of Morgan's 28 mixed method typology, the study will use qualitative methods as the preliminary methodology, although the priority in the proposed research is quantitative.
The generalizability of our results is limited because of the qualitative methodology, although the number of informants is not small for a study using Grounded Theory approach.
The overlap between phonology and attention is a puzzle although, significantly, a similar overlap has been found in a recent meta-analysis using a very different methodology, although this time in the right hemisphere (the left hemisphere was not included in that study) (Bzdok et al. 2013 ).
The LCA methodology, although formalised by the International Standards Organisation (ISO14040), has a number of limitations [ 6, 7]: 1.
Equally, continual improvements in methodology, although welcome, raise the issue of transferability of signatures to newer platforms and can frustrate the clinical need for robust and fixed standards [ 13, 14].
The methodology, although with differences born of necessity in the various surveys in the ten countries, was sound overall; biases should be detectable and their effects mitigated.
We conclude that the methodology, although with differences born of necessity in the ten countries, was sound overall, and will provide robust data on the public ill-health that results from headache in Europe.
On having chance only for one case study, we have compared and evaluated our proposed methods in the light of the actually used software engineering approach and pinpointed the advantages of the proposed methodology, although by a qualitative assessment.
The combination of different interventions could also be investigated using this methodology, although it would depend on the existence of original trial data to provide estimates of the benefit.
