Table 3 Results of pulmonary function tests and arterial blood gas
ParameterGroup AGroup Gp Value
TLC (%), n = 2951.5 (28–82)69 (49–90)0.043
SVC (%), n = 2953.5 (25–88)73 (43–86)0.02
FEV1 (%), n = 2959 (31–91)67.5 (48–95)NS
Tlco (%), n = 2340.5 (20–50)46 (35–89)0.043
Pao2 (mm Hg), n = 3253 (42–68)71 (61–89)<0.0001
Oxygen therapy on admission15/152/170.01

  • Results are expressed as median (range). The results for TLC, SVC, FEV1 and Tlco were expressed as a percentage of the normal predicted value. Comparisons were evaluated by the Mann-Whitney test.

  • Group A, acute onset of interstitial lung disease; group G, gradual onset of interstitial lung disease; TLC, total lung capacity; SVC, slow vital capacity; FEV1, forced expiratory volume in 1 s; Tlco, carbon monoxide transfer factor; Pao2, arterial oxygen tension.