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Table 2: 
Correlation tests for analgesic efficacy
Analgesic efficacy was not correlated with:
-Age of patient (Mann-Whitney test, P = .36 at 6 months)
-Sex of patient (Fisher test, P = .58 at 6 months)
-Intensity of the initial pain (Mann-Whitney test: P > .9999 at 6 months)
-Origin of the cancer (Fisher test: P > .9999 for each type of cancer)
-Number of vertebrae treated per procedure (Mann-Whitney test: P = .21 at 6 months)
-Filling volume (Mann-Whitney test, P = .368 at 1 month and P = .397 at 6 months)
  • Most of the correlation tests were made at 6 months, and the analgesic results are representative (with very few changes at long-term follow-up for the available data).