Table 2.
Analysis of variance for lung liquid volume (VL) data in Fig. 2
| Source of variation in VL | Degrees of freedom | Sum of squares | Mean square | F |
|---|---|---|---|---|
| Animals | 8 | 1981 | 248 | 4.5 |
| Time | ||||
| Plateau plus one-slope regression | 2 | 2934 | 1467 | 26.7 |
| Incorporation of second slope | 1 | 306 | 306 | 5.6 |
| Residual | 30 | 1651 | 55 | — |
| Total | 41 | 6872 | — | — |
The plateau plus one-slope regression is significant at the 0.1% level. A significantly improved fit to the data was achieved by the incorporation of a second slope to the model (P < 0.025).