ko pathway ratio_in_study ratio_in_pop p_value ko00532 Glycosaminoglycan biosynthesis - chondroitin sulfate / dermatan sulfate 1/5 19/7206 0.0131177419535 ko00534 Glycosaminoglycan biosynthesis - heparan sulfate / heparin 1/5 26/7206 0.0179157437446 ko05033 Nicotine addiction 1/5 56/7206 0.0382677097406