Baseline characteristics in intoxicated patients Mean age (years) Male gender (%) Mean COHb (%) Intubation (%) Intentional HBO2 therapy 38 70 22 4 Unintentional HBO2 therapy 40 68 22 6 Intentional NMBO2 therapy 40 56 14 12 (50% died) Unintentional NMBO2 therapy 32 44 7 1 Intentional, no O2 35 70 5 0 Unintentional, no O2 24 42 2.5 0 HBO2: Hyperbaric Oxygen Therpay; NMBO2: Normobaric Oxygen Therapy; O2: Oxygen; COHb: Serum Carboxyhemoglobin Level

Table 2: Baseline characteristics based on treatment in carbon monoxide intoxicated patients.