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Correlation of age and duration of operation in each group with the rate of improvement of corneal epithelial defects
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| Groups | ||||||
| Umbilical cord serum ( n = 40) | Controls ( n = 40) | Total | ||||
| Correlation | P -value | Correlation | P -value | Correlation | P -value | |
| Age | 0.205 | 0.211 | –0.004 | 0.979 | 0.073 | 0.522 |
| Operation duration | –0.202 | 0.219 | –0.202 | 0.212 | –0.218 | 0.054 |
| Based on Spearman’s correlation coefficient | ||||||
