Table 3.
Percentages of children classified by their ROP status (on the left) who satisfied the blood gas criterion at the top of each column (these are row percents)
| ROP severity | Blood gas extreme |
|||||
|---|---|---|---|---|---|---|
| lowest quartile PaO2 | highest quartile PaO2 | lowest quartile PCO2 | highest quartile PCO2 | lowest quartile pH | row n | |
| Stage 3, 4, or 5 | ||||||
| Yes | 20 | 27 | 24 | 26 | 25 | 331 |
| No | 23 | 19 | 21 | 20 | 20 | 711 |
| Zone 1 | ||||||
| Yes | 20 | 37 | 19 | 30 | 35 | 89 |
| No | 22 | 20 | 22 | 21 | 20 | 953 |
| Prethreshold or thre | :shold | |||||
| Yes | 25 | 31 | 21 | 33 | 32 | 174 |
| No | 21 | 19 | 22 | 20 | 20 | 868 |
| Plus disease | ||||||
| Yes | 28 | 28 | 22 | 36 | 31 | 134 |
| No | 21 | 20 | 22 | 20 | 20 | 908 |
| Overall | 22 | 21 | 22 | 22 | 22 | |
| Column number | 227 | 221 | 230 | 229 | 225 | 1,042 |