Document Classification

Section Type: RESULTS

Text: In the group that received interferon gamma-1b plus prednisolone, the partial pressure of arterial oxygen at rest increased from 65 + / -9 mm Hg at base line to 76 + / -8 mm Hg at 12 months, whereas in the group that received prednisolone alone it decreased from 65 + / -6 to 62 + / -4 mm Hg (P < 0. 001 for the difference in the change from baseline values between the two groups) ; on maximal exertion, the value increased from 55 + / -6 to 65 + / -8 mm Hg in the group that received combined treatment and decreased from 55 + / -6 mm Hg to 52 + / -5 mm Hg in the group given prednisolone alone (P < 0. 001).