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Frequency distribution radiolucency, hyperinflation, and air leaks
| Before surfactant N = 69 | After surfactant N = 39 | |
|---|---|---|
| Lung radiolucency, no. (%) | ||
| Grade 0 | 5 (7) | 7 (18) |
| Grade 1 | 22 (32) | 20 (51) |
| Grade 2 | 17 (25) | 8 (21) |
| Grade 3 | 23 (33) | 3 (7) |
| Grade 4 | 2 (2) | 1 (3) |
| Median grade [IQR] | 2 [1, 3] | 1 [1, 2] |
| Lung hyperinflation, no. (%) | ||
| Mild | 8 (12) | 8 (21) |
| Moderate | 5 (7) | 1 (3) |
| Air leak, no. (%) | 0 | 0 |
