Figures
- FIGURE 1
Flow chart of the study population. CT: computed tomography.
- FIGURE 2
Frequency of comorbidities among non-bronchiectasis, asymptomatic bronchiectasis and symptomatic bronchiectasis. *p<0.05, **p<0.01. PVD: peripheral vascular disease; CVD: cerebrovascular disease; GERD: gastro-oesophageal reflux disease; IBD: inflammatory bowel disease.
- FIGURE 3
Prevalence of bronchiectasis based on age group and sex in South Korea during 2016–2017.
- FIGURE 4
Factors related to asymptomatic bronchiectasis. BMI: body mass index; CRP: C-reactive protein; CVD: cerebrovascular disease; FEV1: forced expiratory volume in 1 s; GERD: gastro-oesophageal reflux disease; Hx: history; IBD: inflammatory bowel disease; PVD: peripheral vascular disease.
Tables
- TABLE 1
Baseline characteristics of non-bronchiectasis, asymptomatic bronchiectasis and symptomatic bronchiectasis
Non-bronchiectasis (A) Asymptomatic bronchiectasis (B) Symptomatic bronchiectasis (C) p-value A versus B versus C A versus B B versus C A versus C Subjects n 16 143 566 439 Female sex 5555 (34.4) 221 (39.0) 199 (45.3) <0.001 0.023 0.045 <0.001 Age years 58.19±8.58 64.24±7.40 62.64±7.71 <0.001 <0.001 0.402 <0.001 BMI (n=16 136/566/439) 0.580 0.605 0.249 0.410 Underweight (BMI <18.5 kg·m−2) 462 (2.9) 14 (2.5) 16 (3.6) Normal weight (BMI ≥18.5 and <25 kg·m−2) 10 926 (67.7) 394 (69.6) 286 (65.1) Overweight or obesity (BMI ≥25 kg·m−2) 4748 (29.4) 158 (27.9) 137 (31.2) Smoking history (n=16 090/563/437) <0.001 <0.001 0.322 0.002 Never smoker 7523 (46.8) 301 (53.5) 242 (55.4) Former smoker 5371 (33.4) 184 (32.7) 125 (28.6) Current smoker 3196 (19.9) 78 (13.9) 70 (16.0) PFT: FEV1 % predicted (n=15 747/553/430) 92.06±11.18 90.42±12.07 85.63±14.69 <0.001 0.002 <0.001 0.001 Laboratory test Haemoglobin g·dL−1 (n=16 140/ 566/439) 14.61±1.41 14.44±1.42 14.38±1.44 <0.001 0.006 0.537 <0.001 CRP mg·dL−1 (n=14 618/517/403) 0.11±0.16 0.11±0.15 0.16±0.25 <0.001 0.363 <0.001 <0.001 Continuous variables are presented as mean±sd; categorical variables are presented as number (%). BMI: body mass index; CRP: C-reactive protein; FEV1: forced expiratory volume in 1 s; PFT: pulmonary function test.
Supplementary Material
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Supplementary material 00188-2021.supplement
