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The average measured values of FEV1 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 remissions
| All patients | Firstexam. | Lastexam. | Difference | |
|---|---|---|---|---|
| Received therapy | _X | 40.15 | 42.86 | +2.71 |
| S.D. | 13.32 | 14.32 | 15.06 | |
| Not received therapy | X | 37.08 | 32.66 | -4.42 |
| S.D. | 12.09 | 12.69 | 12.45 |
