Pulmonary involvement in inflammatory bowel disease

Table 4 Correlation of pulmonary function tests between endoscopically and clinically active Crohn’s disease with controls

	Endoscopically active (n = 5) inactive(n = 4)		Clinically active (n = 4) inactive (n = 5)		Control (n = 20)
FEV1	82 ± 12.28	90.75 ± 7.04	81.25 ± 19.50	89.60 ± 7.37	95.75 ± 11.56
FVC	91.20 ± 7.33	95.75 ± 11.15	92.25 ± 7.68	94.00 ± 10.61	96.40 ± 10.00
FEV1/FVC	75.80 ± 14.60	82 ± 4.08	74.25 ± 16.38	82 ± 3.54	84.15 ± 4.21
FEF 25%-75%	61.80 ± 28.84	68.75 ± 7.54	58.50 ± 32.07	70 ± 7.52	85 ± 11.85ac
DLCO	91.20 ± 15.83	90 ± 26.81	103 ± 13.64	80.80 ± 19.42	103.5 ± 11.90c
DLCO/VA	95.40 ± 20.38	90 ± 16.55	102.25 ± 16.15	85.60 ± 16.95	112.95 ± 10.22ac

^aP < 0.05 comparison between active and control groups statistically significant;

^cP < 0.05 comparison between inactive and control groups statistically significant. FEV1: Forced expiratory volume in 1 s; FVC: Forced vital capacity; FEF: Forced expiratory flow; DLCO: Transfer coefficient for carbon monoxide; VA: Alveolar volume.