Table 2.
Cut-off values for FEV1, TDI, and SGRQ according to healthcare professionals, compared to the corresponding MCID.
| n | Mean (SD) | Mean difference compared to MCID (95%CI) | p | ||
|---|---|---|---|---|---|
| FEV1 (ml) | All | 105 | 102.2 (114.1) | 2.2 (-19.9–24.3) | 0.84 |
| MCID = 100 ml | Physicians | 44 | 115.3 (108.8) | 15.3 (-17.8–48.3) | 0.36 |
| Pharmacists | 44 | 100.8 (133.6) | 0.75 (-39.9–41.4) | 0.97 | |
| Practice nurses | 17 | 72.1 (57.8) | -27.9 (-57.6–1.9) | 0.064 | |
| TDI (unit) | All | 109 | 2.5 (1.4) | 1.5 (1.3–1.8) | <0.001* |
| MCID = 1 unit | Physicians | 44 | 2.4 (1.3) | 1.4 (1.0–1.7) | <0.001* |
| Pharmacists | 53 | 2.8 (1.5) | 1.8 (1.4–2.2) | <0.001* | |
| Practice nurses | 12 | 2.2 (1.6) | 1.2 (0.16–2.2) | 0.027* | |
| SGRQ (unit) | All | 119 | 11.0 (10.1) | 7.0 (5.1–8.8) | <0.001* |
| MCID = 4 units | Physicians | 50 | 9.5 (6.4) | 5.5 (3.7–7.3) | <0.001* |
| Pharmacists | 56 | 12.2 (11.9) | 8.2 (5.0–11.3) | <0.001* | |
| Practice nurses | 13 | 11.5 (13.4) | 7.5 (-0.56–15.6) | 0.065 |
* Statistically significant different compared to MCID, based on one-sample T-test. Results were considered significant when p < 0.05.