Table IV.
2X2 table for pO2/FiO2>250.
| Patients outcome | Total | |||
|---|---|---|---|---|
| Successful | Unsuccessful | |||
| Expected outcome | Successful | 692 | 454 | 1146 |
| Unsuccessful | 207 | 147 | 354 | |
| Total | 899 | 601 | 1500 | |
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