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. 2014 Jun 10;31(8):1029–1036. doi: 10.1007/s10815-014-0250-z

Table 3.

Reported patient populations that reduced oxygen concentration is used for: (Number of cycles/year)

The entire IVF population N (%) Poor responder patients N (%) Patients with repeated implantation failures N (%) Patients intended for blastocyst transfer N (%) Not used at all N (%) Total Cycles N P-value
USA & Canada 30,100 (64.45) 300 (0.64) 300 (0.64) 2,200 (4.71) 13,800 (29.55) 46,700 <0.001
South America 1,900 (32.20) 0 0 200 (3.39) 3,800 (64.41) 5,900
Europe 28,300 (43.88) 200 (0.31) 0 3,200 (4.96) 32,800 (50.85) 64,500
Africa 3,100 (34.83) 0 0 3,000 (33.71) 2,800 (31.46) 8,900
Asia 9,000 (33.83) 0 500 (1.88) 1,300 (4.89) 15,800 (59.40) 26,600
Australia 8,100 (93.10) 0 0 0 600 (6.90) 8,700