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Table 4 Baseline data after propensity matching

From: Antibiotic treatment in acute exacerbation of COPD: patient outcomes with amoxicillin vs. amoxicillin/clavulanic acid—data from 43,636 outpatients

 

All (31,475)

AMC (20,138)

AMX (11,337)

p-value

Age, median* (IQR)

69 (62–76)

69 (62–77)

69 (61–76)

< 0.0001

Age*

   

0.0008

 ≤ 62

7737

4823 (24%)

2914 (26%)

 63–69

7231

4594 (23%)

2637 (23%)

 70–77

8713

5644 (28%)

3069 (27%)

 ≥ 78

7794

5077 (25%)

2717 (24%)

Gender female*

16,431

10,471 (52%)

5960 (53%)

0.33

FEV1*

   

< 0.0001

 FEV1 ≥ 80%

1942

1121 (6%)

821 (7%)

 50% ≤ FEV1 ≤ 80%

12,774

7934 (39%)

4840 (43%)

 30% ≤ FEV1 ≤ 50%

11,661

7671 (38%)

3990 (35%)

 FEV1 ≤ 30%

5098

3412 (17%)

1686 (15%)

Exacerbations within the past year*

0

17,791 (88%)

10,143 (89%)

0.0028

1

1601 (8%)

782 (7%)

≥ 2

746 (4%)

412 (4%)

BMI, median* (IQR)

25.0 (21.5–29.0)

25.0 (21.0–29.0)

25.0 (22.0–29.0)

< 0.0001

BMI* (kg/m2)

   

0.0011

 10.0–18.4

2810

1853 (9%)

957 (8%)

 18.5–24.9

12,308

7964 (40%)

4344 (38%)

 25.0–29.9

9497

6045 (30%)

3452 (30%)

 ≥ 30

6860

4276 (21%)

2584 (23%)

Smoking*

0.0022

 Current smokers

10,802

6787 (34%)

4015 (35%)

 Ex-/Non-smokers

20,673

13,351 (66%)

7322 (65%)

Prednisolone treatment for exacerbation*

No prednisolone

17,769 (88%)

10,189 (90%)

< 0.0001

Short course treatment

1899 (9%)

918 (8%)

Long course treatment

470 (2%)

230 (2%)

Comorbidities

 Cardiovascular disease

10,838

6860 (34%)

3978 (35%)

0.07

 Diabetes mellitus*

1893

1165 (6%)

728 (6%)

0.0231

 Renal failure

682

416 (2%)

266 (2%)

0.11

 Depression

453

278 (1%)

175 (2%)

0.26

  1. * Significant difference found between the two groups (p < 0.05)