Table 5. Success rate of recompression therapy in 5,269 DCI cases^*.

Condition	Case (n)	Complete recovery† [n (%)]		Improvement [n (%)]		Ineffectiveness△ [n (%)]		Death [n (%)]
		After initial recompression	At discharge	After initial recompression	At discharge	After initial recompression	At discharge
Mild	3,831	3,532 (92.2%)	3,594 (93.8%)	299 (7.8%)	237 (6.2%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
Moderate	1,124	914 (81.3%)	953 (84.8%)	208 (18.5%)	169 (15.0%)	2 (0.2%)	2 (0.2%)	0 (0.0%)
Severe	314	153 (48.7%)	185 (58.9%)	124 (39.5%)	96 (30.6%)	13 (4.1%)	9 (2.9%)	24 (7.6%)
Total	5,269	4,499 (87.3%)	4,732 (89.8%)	631 (12.0%)	502 (9.5%)	15 (0.3%)	11 (0.2%)	24 (0.5%)

^*Nine death cases before recompression were excluded.

^†The rate of complete recovery decreased significantly with the increase of severity of DCI both after initial therapy (χ ² = 539.92, P<0.001) and at discharge (χ ² = 425.48, P<0.001).

^△The rate of ineffectiveness increased significantly with the increase of severity both after initial therapy (χ ² = 175.81, P<0.001) and at discharge (χ ² = 114.51, P<0.001).