You can download in this page the data and the survey used in the study.

Please feel free to contact the authors for help on using the survey template for your data.

 

The data used in the study can be downloaded from here.

The explanation of the KPI are given in Table A1 sheet in the same file:

 

The survey used to collect the data can also be downloaded from here, for repeatability and extended research.

Please feel free to contact the authors for help on using the survey template for your data.