CRP and retinopathy of prematurity: The presence of CRP > 20 mg/L as a risk factor for severe ROP was significant during the first postnatal week, the first four postnatal weeks and before 30 weeks of PMA in unadjusted as well as adjusted logistic regression, with the most significant impact if present during the first postnatal week (OR 4.24, 95% CI 1.32–13.57, p = 0.015, adjusted analyses).