Table 1.
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 number of exacerbations of illness per year
| Average number of exacerbationsper year | Firstexam. | Lastexam. | Difference | Significance | |
|---|---|---|---|---|---|
| 1exacerbation or less | _X | 60.91 | 63.25 | +2.34 | non.signif. |
| S.D. | 16.09 | 15.55 | 17.37 | ||
| 2-3 exacerbations | _X | 56.93 | 52.08 | -4.85 | p=0.05 |
| S.D. | 18.63 | 14.96 | 18.43 | ||
| More than 3 exacerbation | _X | 56.24 | 50.01 | -6.23 | p=0.01 |
| S.D. | 14.44 | 14.42 | 15.98 | ||
| All patients | _X | 57.97 | 54.95 | -3.02 | p=0.05 |
| S.D. | 16.58 | 16.08 | 17.74 |
*exam. =examination