Fig. 2.

Changes in fecal calprotectin levels according to the number of days after birth. This figure shows the clear positive linear relationship between the fecal calprotectin level and number of days after birth in the gestational age <26 weeks group. There was a clear negative linear relationship between the calprotectin level and number of days after birth in the gestational age ≥26 weeks and <30 weeks group. Moreover, these results were statistically significant. Solid line, gestational age (GA)≥26 weeks and <30 weeks group; dotted line, gestational age <26 weeks group.