Copyright information:Taken from "Effectiveness of polymyxin B-immobilized fiber column in sepsis: a systematic review"http://ccforum.com/content/11/2/R47Critical Care 2007;11(2):R47-R47.Published online 20 Apr 2007PMCID:PMC2206475. Mean arterial pressure (MAP). Mortality. Solid line represents line of neutral effect. Dashed line represents point estimate of analysis. RR, risk ratio; SE, standard error.