Skip to main content

Table 6 PM2.5 levels on the day before hospitalization associated with PT changes in AECOPD patients

From: Effect of urban air pollution on CRP and coagulation: a study on inpatients with acute exacerbation of chronic obstructive pulmonary disease

Variable PM2.5 The day before hospitalization
< 25 mg/L F/t p ≥ 25 mg/L F/t p
GOLD classes
 Moderate 12.57 ± 1.62 0.488 0.784 12.71 ± 1.10 9.683 0.008
 Severe 12.67 ± 3.37    12.05 ± 2.10   
 Very severe 12.50 ± 1.76    11.75 ± 1.47   
Age years
 < 65 12.01 ± 4.10 1.146 0.255 11.92 ± 2.03 0.627 0.531
 ≥ 65 12.81 ± 2.23    12.09 ± 1.83   
Sex
 Female 12.36 ± 1.00 0.406 0.686 11.77 ± 1.81 0.924 0.357
 Male 12.67 ± 3.01    12.05 ± 1.88   
BMI (kg/m2)
 < 18.5 11.35 ± 2.43 0.946 0.347 11.62 ± 1.09 1.213 0.226
 ≥ 18.5 12.69 ± 2.78    12.09 ± 1.97   
Current smoker
 Yes 13.13 ± 3.70 0.450 0.654 12.01 ± 1.91 0.378 0.71
 No 12.60 ± 2.72    12.14 ± 1.79   
Passive smoking
 Yes 12.46 ± 2.41 0.367 0.715 12.11 ± 1.75 0.392 0.695
 No 12.69 ± 2.93    12.00 ± 2.13   
Use of statins
 Yes 13.49 ± 3.16 1.126 0.263 12.17 ± 1.71 0.441 0.659
 No 12.49 ± 2.70    12.00 ± 2.49   
Inhaled corticosteroids
 Yes 12.67 ± 2.90 0.549 0.585 12.00 ± 1.76 0.570 0.569
 No 12.18 ± 1.44    12.20 ± 2.51   
Comorbidities
 Hypertension
  Yes 13.11 ± 2.13 0.988 0.326 12.14 ± 1.40 0.603 0.547
  No 12.26 ± 3.11    11.98 ± 2.10   
 Coronary heart disease
 Yes 13.16 ± 1.82 1.108 0.271 12.15 ± 2.31 0.549 0.584
 No 12.42 ± 3.01    11.99 ± 1.74   
 Diabetes
 Yes 13.05 ± 1.51 0.581 0.563 12.34 ± 1.38 1.026 0.306
 No 12.55 ± 2.91    11.98 ± 1.96   
 Asthma
 Yes 12.84 ± 1.05 0.243 0.809 11.64 ± 1.36 0.949 0.344
 No 12.59 ± 2.88    12.07 ± 1.93   
  1. p-values are shown for the Kruskal–Wallis test or the Student’s t-test
  2. PM2.5, Particulate matter smaller than 2.5 µm in diameter; PM10, Particulate matter smaller than 10 µm in diameter; BMI, Body Mass Index; GOLD, Global Initiative for Chronic Obstructive Lung Disease