Table 3.
CCQ scores according to GOLD criteria
| |
N |
CCQ total score |
CCQ domain score |
||||||
|---|---|---|---|---|---|---|---|---|---|
| |
|
|
Symptom |
Functional state |
Mental state |
||||
| Mean | (SE) | Mean | (SE) | Mean | (SE) | Mean | (SE) | ||
| Stage I |
13 |
0.8 |
(0.3) |
1.1 |
(0.3) |
0.6 |
(0.3) |
0.4 |
(0.4) |
| Stage II |
114 |
0.9 |
(0.3) |
1.3 |
(0.2) |
0.7 |
(0.2) |
0.8 |
(0.2) |
| Stage III |
60 |
1.4 |
(0.2) |
1.6 |
(0.2) |
1.3 |
(0.2) |
1.1 |
(0.3) |
| Stage IV |
13 |
2.0 |
(0.3) |
1.7 |
(0.3) |
2.3 |
(0.3) |
2.2 |
(0.4) |
| P trend* | <0.001 | 0.026 | <0.001 | <0.001 | |||||
All CCQ scores [adjusted mean values (SE)] were adjusted by age group, level of education, gender, and smoking status. SE, standard error of the mean.
*The P–trend value tests the null hypothesis that there is no linear trend between the CCQ means and GOLD stage order.