The Clinical COPD Questionnaire Correlated with BODE Index-A Cross-Sectional Study

Table 1

Characteristics of 89 included men with clinically stable chronic obstructive pulmonary disease.

Characteristic	Mean ± SD
Age (yr)	70.6±10.1
Male (%)	80.1±0.2
Smoking history (pack-yr)	51.8±28.2
FVC* (liter)	70.9±18.9
FEV1/FVC^†	55.4±11.9
FEV1 (% of predicted value)	54.2±21.7
MMRC dyspnea scale^‡	1.9±1.4
Distance walked in 6 min (m)	398.4±115.2
Body mass index^§	23.4±3.5

*FVC denotes forced vital capacity, and ^†FEV1 forced expiratory volume in one second. ^‡Scores on the modified Medical Research Council (MMRC) dyspnea scale may range from 0 to 4, with a score of 4 indicating that the patient is too breathless to leave the house or becomes breathless when dressing or undressing. ^§The body mass index is the weight in kilograms divided by the square of the height in meter.