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Table 2 Distribution of quality of life measure for COPD patients by current severity levels

From: Quality of life and its association with direct medical costs for COPD in urban China

Current severity Mobility (%)* Self-care (%)* Usual activities (%)* Pain/Discomfort (%)* Anxiety/depression (%)* VAS score** Utilities score**
1 2 3 1 2 3 1 2 3 1 2 3 1 2 3
Mild 80.6 19.4 0.0 93.5 6.5 0.0 86.3 12.9 0.7 76.3 23.0 0.7 72.7 26.6 0.7 70.0 (71.8 ± 13.3) 0.848 (0.786 ± 0.085)
Moderate 67.6 29.1 3.4 85.8 11.1 3.0 67.6 27.4 5.1 62.8 35.1 2.0 73.0 24.7 2.4 70.0 (67.1 ± 16.7) 0.773 (0.734 ± 0.158)
Severe 44.8 52.5 2.8 75.1 22.1 2.8 44.8 48.1 7.2 54.7 42.5 2.8 67.4 30.4 2.2 67.0 (63.5 ± 16.3) 0.724 (0.691 ± 0.155)
Very severe 31.1 65.6 3.3 65.6 29.5 4.9 32.8 59.0 8.2 47.5 47.5 4.9 63.9 31.1 4.9 60.0 (61.3 ± 15.8) 0.675 (0.655 ± 0.151)
p value <0.001 0.016 <0.001 <0.001 <0.001 <0.001 <0.001
Total 60.9 36.6 2.5 82.7 14.8 2.5 62.2 32.8 5.0 62.0 35.7 2.2 70.6 27.2 2.2 70.0(66.6 ± 16.2) 0.768 (0.726 ± 0.150)
  1. *1 = no problem; 2 = moderate or some problem; 3 = inability or extreme problem.
  2. **Median (Mean ± standard deviation).
  3. Abbreviation: VAS visual analog scale.