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The average measured values of FVC expressed as a per cent of average of normal values for that group of patients at first and last examination according to the using therapy in phases of illness exacerbations
| Received complete therapy | _X | 59.08 | 57.84 | -1.24 |
| S.D. | 16.35 | 15.92 | 18.04 | |
| Not received complete therapy | _X | 56.13 | 50.19 | -5.94 |
| S.D. | 16.78 | 15.18 | 16.84 |
