Table 4 Effect of the pattern of exposure on different clinical and functional parameters

Duration of symptoms (months)

51.6 ± 67.56

30.7 ± 57.27

0.2

FVC

48.13 ± 20.94

57.8 ± 15.47

0.09

Oxygen saturation

95.5 ± 2.35

96.1 ± 2.26

0.4

Interval from initiation of exposure until symptoms (months)

11.39 ± 10.9

22.8 ± 20.21

0.01

Dyspnea grade

 Grade 2

24 (85.7%)

27 (77.1%)

0.4

 Grade 3

4 (14.3%)

6 (17.1%)

 Grade 4

0 (0%)

2 (5.7%)