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Table 5 Age of onset substance abuse among the studied abusers

From: Association between male sex hormones and tramadol abuse

Substance abuse Age of onset (mean±SD) p-value
Tramadol 23.65 ± 5.46 0.008*
Tramadol and other substances 19.80 ± 5.75
  1. P-value (0.008) of independent T-test is significant