Hyperbaric oxygen v normobaric oxygen for acute carbon monoxide poisoning†

Neurological sequelaeHyperbaricNormobaricRRR (95% CI)NNT (CI)
†Abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article. Analysis includes all patients. Those with missing data at 6 weeks were assumed to have cognitive sequelae; those with cognitive sequelae at 6 weeks and missing data at 6 or 12 months were assumed to have cognitive sequelae at those time points.
at 6 weeks25%46%46% (15 to 66)5 (3 to 18)
at 6 months21%38%45% (8.3 to 67)6 (4 to 39)
at 1 year18%33%44% (2.2 to 68)7 (4 to 182)