Item (non-missing observations) | Mean (sd) or frequency (%) |
Dyspnea-12 scales | |
Total (n=858) | 1.62 (4.0) |
Physical (n=846) | 1.08 (2.5) |
Affective (n=850) | 0.54 (1.7) |
Multidimensional Dyspnea Profile scales | |
A1 unpleasantness (n=830) | 0.71 (1.4) |
Immediate perception (n=721) | 2.62 (6.4) |
Emotional response (n=809) | 1.77 (5.1) |
mMRC (n=880) | |
0 | 606 (67%) |
1 | 120 (13%) |
2 | 71 (8%) |
3 | 44 (5%) |
4 | 39 (4%) |
Breathlessness severity (n=844) | |
None | 555 (66%) |
Mild | 186 (22%) |
Moderate | 98 (12%) |
Severe | 5 (1%) |
Recalled change in breathlessness since age 65 years (n=900) | |
Better | 97 (11%) |
No difference | 543 (60%) |
Worse | 260 (29%) |
Recalled duration of experienced breathlessness (n=167) | |
Less than 1 year | 48 (29%) |
1–5 years | 72 (43%) |
More 5 years | 47 (28%) |
Data are means (sd) or frequency (percentage). A higher score on the Dyspnea-12 or Multidimensional Dyspnea Profile scales signify worse breathlessness. Recalled change in breathlessness since age 65 years was measured through global impression of change. mMRC: Medical Research Council breathlessness scale.