1) Keep in mind that you cannot alter the PPI's questions, answer options, answer values, or look-up table without rendering the PPI inaccurate. Even a small change can have a big impact on the PPI's accuracy.
2) It is not possible to determine poverty level based on using an average PPI score as it leads to incorrect poverty rate – read detail explanation here.
3) The PPI methodology (and therefore also this indicator) can only be used in those countries for which PPI scorecards were developed. The list of countries is available at the PPI website.