Description of sociodemographic and clinical characteristics

VariablesN (%)
Age
        < 50 years26 (38.8)
        ≥ 50 years41 (61.2)
Gender
        Male15 (22.4)
        Female52 (77.6)
Habitat
        Rural49 (76.6)
        Urban15 (23.4)
Marital status
        Married40 (75.5)
        Unmarried13 (24.5)
Level of education
        Illiterate34 (77.3)
        Literate10 (22.7)
Profession
        Unemployed24 (54.5)
        Employed20 (45.5)
Lives
        Alone4 (7.1)
        With family52 (92.9)
Step
        I or II10 (17.9)
        III or IV 46 (82.1)
Level of control
        Well controlled37 (66.1)
        Poorly controlled19 (33.9)
Comorbidity
        Hypertension10 (14.9)
        Diabetes10 (14.9)
        Cardiac disease7 (10.4)
Surgical antecedents17 (25.8)
Smokers/ex-smokers10 (14.9)
Cough27 (40.3)
Dyspnea stage mMRC ≥ 218 (26.9)
Cyanosis8 (14.0)
Sputum15 (22.4)
Wheezing30 (44.8)
Pain6 (9.0)
Hemoptysis6 (9.0)
Infection14 (20.9)
Fatigue16 (23.9)
Weight loss11 (16.4)
Anorexia8 (11.9)
Patient under oxygen therapy      
        Yes6 (9.0)
        No61 (91.0)
Number of treatments      
        < 220 (29.9)
        ≥ 247 (70.1)
Number of exacerbations      
        < 2/year39 (58.2)
        ≥ 2/year28 (41.8)
Number of hospitalizations      
        < 2/year59 (88.1)
        ≥ 2/year8 (11.9)
Duration of disease: mean (± SD)11.9 ± 8.8
FEV1: mean (± SD)1.7 ± 0.8

The missing data are due to non-responders and potential input errors or incomplete information from medical records. FEV1: forced expiratory volume in 1 second; mMRC: Modified Medical Research Council Dyspnoea Scale