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. 2014 Sep 19;9(9):e106888. doi: 10.1371/journal.pone.0106888

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(A) NEC incidence values are the sum of all clinical or histological NEC cases and expressed as percentage. Results were not significant. EA, n = 27; EG, n = 16. (B) Clinical NEC severity scores determined in the stomach (Stom), jejunum (Jej), ileum (Ile), colon (Col) and all those 4 tissues combined (Tot). For each tissue, grades 1–2 represent “No NEC” and grades 3–6 represent “NEC”. For combined tissues, the maximum clinical NEC severity score is 24. EA, n = 27; EG, n = 16. (C) Histological NEC severity scores determined in the jejunum (Jej), ileum (Ile), colon (Col) and all those 3 tissues combined (Tot). For each tissue, grades 0–1 represent “No NEC” and grades 2–4 represent “NEC”. For combined tissues, the maximum histological NEC severity score is 12. EA, n = 27; EG, n = 16; *P<0.05 EA vs. EG. EA, early abrupt; EG, early gradual.