passages.id: split_4_validation_655_passage
passages.type: progene_text
passages.text: Nitrogen balance improved from - 31.8 +/- 21.4 g / d during phase I , to - 12.9 +/- 10.3 g / d during phase II ( P < .001 ) , and further improved to - 4.1 +/- 4.0 g / d in phase III ( P < .001 v phase I ) .