Lower daily NG output ( 583 208 vs 922 399 mL/d , P < 0.001 ) , shorter duration of NG tube use ( 16.7 8.8 vs 27.7 9.9 d , P < 0.001 ) , and shorter length of hospital stay ( 25.8 vs 34.9 d , P = 0.001 ) were observed in the intervention group .