Table 2.
In your IVF laboratory, is reduced (5 %) oxygen concentration used in your embryo culture system? (Number of cycles/year)
| Only a two-gas system (6 % CO2 in air) is used N (%) | Both three- (6 % CO2, 5 % O2, 89 % N2) and two-gas systems are used N (%) | Only three-gas system is used N (%) | Other N (%) | Total N | P-value | |
|---|---|---|---|---|---|---|
| United States and Canada | 14,600 (31.26) | 20,800 (44.54) | 11,200 (23.98) | 100 (0.21) | 46,700 | <0.001 |
| South America and Mexico | 3,500 (59.32) | 1,800 (30.51) | 300 (30.51) | 300 (5.08) | 5,900 | |
| Europe | 28,300 (48.88) | 17,500 (27.13) | 15,800 (24.50) | 2,900 (4.50) | 64,500 | |
| Africa | 2,700 (30.34) | 900 (10.11) | 5,300 (59.55) | 0 | 8,900 | |
| Asia | 12,900 (48.50) | 11,100 (41.73) | 1,200 (4.51) | 1,400 (5.26) | 26,600 | |
| Australia | 600 (6.90) | 3,300 (37.93) | 4,800 (55.17) | 0 | 8,700 |