Delay from the onset of symptom to hyperbaric treatment and the corresponding success rate of recompression therapy.

Note: Eight (note 1) and 1 (note 2) cases died before recompression were not included. Twenty-two (note 3) and 2 (note 4) death cases were in these two categories of delay, respectively. Effectiveness is the sum of the rate of complete and incomplete.*Chi-square test showed that the complete recovery rate decreased significantly with the increase of the delay (χ2 = 114.27, P