Pulmonary involvement in inflammatory bowel disease

Table 3 Correlations of pulmonary function tests with inflammatory bowel disease and controls

	UC (n = 30)	CD (n = 9)	Controls (n = 20)
FEV1	86.87 ± 15.09a	85.89 ± 13.75	95.75 ± 11.56
FVC	88.37 ± 15.80	93.22 ± 8.90	96.40 ± 10.00
FEV1/FVC	79.67 ± 8.98a	78.56 ± 11.11	84.15 ± 4.21
FEF 25%-75%	73.93 ± 21.38	64.89 ± 21.23a	85.00 ± 11.85
DLCO	96.43 ± 12.84a	90.67 ± 19.88a	103.5 ± 11.90
DLCO/VA	104.83 ± 16.99	93.00 ± 17.85a	112.95 ± 10.22

^aP < 0.05 vs control group statistically significant. UC: Ulcerative colitis; CD: Crohn’s disease; FEV1: Forced expiratory volume in 1 s; FVC: Forced vital capacity; FEF: Forced expiratory flow; DLCO: Transfer coefficient for carbon monoxide; VA: Alveolar volume.