Test–retest reliability for the Swedish MDP
| MDP score | Baseline versus after 30–90 min ICC (95% CI) | Baseline versus after 2 weeks ICC (95% CI) | After 30–90 min versus after 2 weeks ICC (95% CI) |
| Patients, n | 148 | 78 | 71 |
| Summary scores | |||
| MDP total score | 0.90 (0.72 to 0.95) | 0.83 (0.73 to 0.90) | 0.91 (0.84 to 0.95) |
| MDP perception score | 0.90 (0.78 to 0.95) | 0.77 (0.62 to 0.86) | 0.90 (0.83 to 0.94) |
| MDP emotional response score | 0.86 (0.68 to 0.93) | 0.81 (0.71 to 0.88) | 0.84 (0.72 to 0.90) |
| A1 unpleasantness | 0.76 (0.66 to 0.83) | 0.67 (0.52 to 0.78) | 0.68 (0.52 to 0.79) |
| Sensory qualities | |||
| Muscle work or effort | 0.84 (0.77 to 0.89) | 0.71 (0.57 to 0.81) | 0.67 (0.51 to 0.79) |
| Air hunger | 0.82 (0.72 to 0.88) | 0.69 (0.54 to 0.79) | 0.73 (0.56 to 0.83) |
| Chest tightness or constriction | 0.86 (0.78 to 0.91) | 0.79 (0.69 to 0.86) | 0.79 (0.67 to 0.87) |
| Mental effort or concentration | 0.80 (0.71 to 0.86) | 0.68 (0.53 to 0.79) | 0.72 (0.58 to 0.82) |
| Breathing a lot | 0.83 (0.75 to 0.88) | 0.61 (0.43 to 0.74) | 0.60 (0.40 to 0.74) |
| Emotional responses | |||
| Depressed | 0.86 (0.75 to 0.91) | 0.82 (0.72 to 0.88) | 0.79 (0.68 to 0.86) |
| Anxious | 0.81 (0.66 to 0.88) | 0.74 (0.61 to 0.83) | 0.72 (0.58 to 0.82) |
| Frustrated | 0.78 (0.66 to 0.85) | 0.75 (0.63 to 0.83) | 0.72 (0.58 to 0.82) |
| Angry | 0.85 (0.78 to 0.90) | 0.64 (0.48 to 0.76) | 0.59 (0.41 to 0.73) |
| Afraid | 0.81 (0.68 to 0.88) | 0.62 (0.46 to 0.74) | 0.70 (0.55 to 0.80) |
Test–retest reliability of the MDP in Swedish was analysed using ICCs for patients who reported their breathlessness to be unchanged compared with the first assessment (Global Impression of Change score=4) at the follow-up. The test–retest reliability at 2 weeks was compared between the first (baseline) and second (after 30–90 min) assessments to evaluate a potential learning effect between the MDP scorings.
ICC, intraclass correlation coefficient; MDP, Multidimensional Dyspnea Profile.