Table 1 Demographic characteristics of the study population (n = 377)
From: Factors responsible for poor sleep quality in patients with chronic obstructive pulmonary disease
Characteristics | Mean ± SD |
|---|---|
Age, years | 73.0 ± 10.1 |
Male sex, n (%) | 371 (98.4 %) |
BMI, (kg/m2) | 23.6 ± 3.0 |
Smoking history | |
Never smoker, n (%) | 22 (6.0 %) |
Ex-smoker, n (%) | 232 (63.0 %) |
Current smoker, n (%) | 114 (31 %) |
FEV1, L | 1.4 ± 0.5 |
FEV1, predicted % | 59.8 ± 23.0 |
Exacerbation in previous year, times | 0.6 ± 1.2 |
Comorbidities | |
Cardiovascular disease, n (%) | 157 (41.6 %) |
Ischemic heart disease, n (%) | 35 (9.3 %) |
Heart failure, n (%) | 15 (4.0 %) |
Hypertension, n (%) | 129 (34.2 %) |
Arrhythmia, n (%) | 19 (5.0 %) |
Depression, n (%) | 10 (2.7 %) |
Maintenance inhaler | |
LABA, n (%) | 18 (4.8 %) |
LAMA, n (%) | 87 (23.1 %) |
LABA/LAMA, n (%) | 21 (5.6 %) |
LABA/ICS, n (%) | 72 (19.1 %) |
LAMA/ICS, n (%) | 3 (0.8 %) |
LABA/LAMA/ICS, n (%) | 90 (23.9 %) |
No maintenance inhaler, n (%) | 86 (22.8 %) |
GOLD classification | |
Group A, n (%) | 60 (15.9 %) |
Group B, n (%) | 150 (39.8 %) |
Group C, n (%) | 34 (9.0 %) |
Group D, n (%) | 133 (35.3 %) |
PSQI score | |
PSQI >5, n (%) | 200 (53.1 %) |
PSQI≦5, n (%) | 177 (46.9 %) |