Figures & data
Figure 1 Flowchart of information through the different phases of this systematic review and meta-analysis.
![Figure 1 Flowchart of information through the different phases of this systematic review and meta-analysis.](/cms/asset/eee19794-3dc4-4a4d-9f9c-1af3534662ef/dcop_a_12157535_f0001_c.jpg)
Figure 2 Forest plot of NT-proBNP level between COPD patients and Non-COPD patients.
![Figure 2 Forest plot of NT-proBNP level between COPD patients and Non-COPD patients.](/cms/asset/d3e230ad-6f71-4f38-8b3d-11173d1aa795/dcop_a_12157535_f0002_c.jpg)
Figure 3 Forest plot of NT-proBNP level between COPD patients and Non-COPD patients subgroups.
![Figure 3 Forest plot of NT-proBNP level between COPD patients and Non-COPD patients subgroups.](/cms/asset/3252e819-9c30-40a5-887e-3366bd398756/dcop_a_12157535_f0003_c.jpg)
Figure 4 Sensitivity analysis plot of NT-proBNP level between COPD patients and Non-COPD patients.
![Figure 4 Sensitivity analysis plot of NT-proBNP level between COPD patients and Non-COPD patients.](/cms/asset/69d74a92-d42d-408c-a01b-28f4f951cf50/dcop_a_12157535_f0004_c.jpg)
Figure 5 Forest plot of NT-proBNP level between stable COPD patients and healthy control.
![Figure 5 Forest plot of NT-proBNP level between stable COPD patients and healthy control.](/cms/asset/c534726c-dec1-4a44-a28c-ea7b498a0476/dcop_a_12157535_f0005_c.jpg)
Figure 6 Sensitivity analysis plot of NT-proBNP level between COPD patients and healthy control.
![Figure 6 Sensitivity analysis plot of NT-proBNP level between COPD patients and healthy control.](/cms/asset/29744127-60c3-4cf4-a6af-4e27ba3aa6cd/dcop_a_12157535_f0006_c.jpg)
Figure 7 Forest plot of NT-proBNP level between stable COPD patients and AECOPD patients.
![Figure 7 Forest plot of NT-proBNP level between stable COPD patients and AECOPD patients.](/cms/asset/7cfecf03-6333-498d-b36f-55bc21016d68/dcop_a_12157535_f0007_c.jpg)
Figure 8 Sensitivity analysis plot of NT-proBNP level between stable COPD patients and AECOPD patients.
![Figure 8 Sensitivity analysis plot of NT-proBNP level between stable COPD patients and AECOPD patients.](/cms/asset/390a0800-636f-41ea-b4c4-68fda910ec37/dcop_a_12157535_f0008_c.jpg)
Figure 9 Forest plot of NT-proBNP level between Severe group and Non-severe group.
![Figure 9 Forest plot of NT-proBNP level between Severe group and Non-severe group.](/cms/asset/22037117-43be-4bc8-92a9-a6650ed64346/dcop_a_12157535_f0009_c.jpg)
Figure 10 Forest plot of NT-proBNP level between Survivors and Non-survivors during hospitalisation.
![Figure 10 Forest plot of NT-proBNP level between Survivors and Non-survivors during hospitalisation.](/cms/asset/2aa79e70-ef9a-428e-b8ab-bb64dbbe860a/dcop_a_12157535_f0010_c.jpg)
Figure 11 Sensitivity analysis plot of NT-proBNP level between Survivors and Non-survivors.
![Figure 11 Sensitivity analysis plot of NT-proBNP level between Survivors and Non-survivors.](/cms/asset/ccdd8d58-ba67-42f4-a49b-ffd12666340a/dcop_a_12157535_f0011_c.jpg)
Figure 12 Forest plot of NT-proBNP level between COPD with CHF patients and COPD patients.
![Figure 12 Forest plot of NT-proBNP level between COPD with CHF patients and COPD patients.](/cms/asset/3d8419d9-b0f6-4d31-8e25-e91d7ab478be/dcop_a_12157535_f0012_c.jpg)
Figure 13 Sensitivity analysis plot of NT-proBNP level between COPD with CHF patients and COPD patients.
![Figure 13 Sensitivity analysis plot of NT-proBNP level between COPD with CHF patients and COPD patients.](/cms/asset/dfac1c41-ee79-49c1-8432-5dd704ccbae2/dcop_a_12157535_f0013_c.jpg)
Figure 14 Forest plot of NT-proBNP level between CHF with COPD patients and CHF patients.
![Figure 14 Forest plot of NT-proBNP level between CHF with COPD patients and CHF patients.](/cms/asset/a90e1dab-63e0-4eb5-8003-edcbcff6137e/dcop_a_12157535_f0014_c.jpg)
Figure 15 Sensitivity analysis plot of NT-proBNP level between CHF with COPD patients and CHF patients.
![Figure 15 Sensitivity analysis plot of NT-proBNP level between CHF with COPD patients and CHF patients.](/cms/asset/f6fdff87-3bbd-4759-9dcc-382a17221d72/dcop_a_12157535_f0015_c.jpg)
Figure 16 Forest plot of NT-proBNP level between COPD with PH patients and COPD patients.
![Figure 16 Forest plot of NT-proBNP level between COPD with PH patients and COPD patients.](/cms/asset/0f4319b9-7e34-4824-a902-2a53cae0211d/dcop_a_12157535_f0016_c.jpg)