But what got me was that this long report is pretty much worthless. On page 81 in the appendix we are told how they gathered their results. Out of a prison population of 85,228 they interviewed 144 or 0.17%. Of those 97 responded through self-filled in surveys leaving just 47 who were actually interviewed or 0.06%. 24 former prisoners filled in on-line surveys and 29 families did likewise. These last two groups chose to do so after reading about it in the Unlock charity's e-newsletter.
OK so the sample sizes were far too small and obviously biased. Now get this from page 18 of the report in the Methodology section:
Statistical data were analysed on SPSS to produce frequencies and simple cross tabulations. The small size of the samples precluded tests for statistical significance.Yet somehow enough to produce a 95 page report.