Table 1.
Parameter values for the hyperoxic data for Model 1 estimated without and with a noise model
| Subject no. | Gc(l min−1 Torr−1) | τc(s) | dc(s) | B(Torr) | C(l min−1 min−1) | f | Rv/Rw | Whiteness |
|---|---|---|---|---|---|---|---|---|
| No noise model | ||||||||
| 973 | 3.67 | 85.0 | 0.1 | 32.2 | 0.228 | — | — | NW |
| 974 | 2.74 | 59.6 | 3.5 | 26.4 | 0.360 | — | — | NW |
| 1003 | 1.75 | 89.0 | 2.9 | 27.6 | 0.078 | — | — | NW |
| 1004 | 1.86 | 31.0 | 7.9 | 34.0 | 0.276 | — | — | NW |
| 1023 | 4.69 | 38.0 | 5.6 | 40.7 | 0.504 | — | — | NW |
| 1069 | 1.08 | 40.6 | 4.1 | 24.8 | 0.300 | — | — | NW |
| 1091 | 1.65 | 31.3 | 7.7 | 32.4 | 0.756 | — | — | NW |
| 1093 | 1.49 | 54.9 | 5.0 | 34.3 | 0.198 | — | — | NW |
| 1103 | 2.31 | 42.4 | 18.9 | 37.6 | 0.792 | — | — | NW |
| Mean | 2.36 | 52.4 | 6.2 | 32.2 | 0.390 | — | — | NW |
| s.e.m. | 0.39 | 7.3 | 1.8 | 1.7 | 0.084 | — | — | — |
| With noise model | ||||||||
| 973 | 3.27 | 55.1 | 5.4 | 31.9 | 0.414 | 0.93 | 0.40 | W |
| 974 | 2.49 | 35.2 | 5.2 | 25.2 | 0.378 | 0.92 | 0.66 | W |
| 1003 | 1.74 | 86.0 | 2.6 | 27.3 | 0.078 | 0.81 | 0.21 | W |
| 1004 | 1.86 | 28.9 | 8.2 | 33.8 | 0.270 | 0.80 | 0.41 | W |
| 1023 | 4.44 | 34.1 | 7.0 | 40.1 | 0.438 | 0.92 | 0.84 | W |
| 1069 | 1.06 | 38.2 | 3.1 | 24.1 | 0.282 | 0.75 | 1.34 | NW |
| 1091 | 1.64 | 30.7 | 8.5 | 31.6 | 0.678 | 0.91 | 0.33 | W |
| 1093 | 1.48 | 43.8 | 5.8 | 34.1 | 0.216 | 0.77 | 0.71 | W |
| 1103 | 1.30 | 27.1 | 18.9 | 32.7 | 0.738 | 0.97 | 0.09 | W |
| Mean | 2.14 | 42.1 | 7.2 | 31.2 | 0.390 | 0.86 | 0.55 | W |
| s.e.m. | 0.36 | 6.2 | 1.6 | 1.7 | 0.072 | 0.03 | 0.13 | — |
Abbreviations: Gc, central chemoreflex sensitivity; τc, central chemoreflex time constant; dc, central chemoreflex delay; B, bias term equivalent to PET,CO2 for which V̇c= 0; C, trend term; f, system gain for noise component; Rv/Rw, variance ratio for process and measurement noise; Whiteness, result of Portmanteau test on residuals (NW, non-white; W, white).