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Table 4 Relation between smoking history, CRP, FEV1 and FIV1 in patients with airway obstruction

From: The added value of C-reactive protein to clinical signs and symptoms in patients with obstructive airway disease: results of a diagnostic study in primary care

Smoking [pack year]

n

CRP [mg/l]

mean (sd)

FEV1 [l]

mean (sd)

FEV1pred. [%]

mean (sd)

FIV1 [l]

mean (sd)

0 < py ≤ 5

10

2.9 (1.6)

2.7 (1.0)

79.1 (22.0)

3.2 (0.1)

5 < py ≤ 10

3

3.2 (2.3)

3.0 (0.8)

89.8 (4.8)

3.5 (0.8)

10 < py ≤ 20

6

5.3 (4.2)

3.2 (1.4)

93.6 (14.6)

3.3 (1.1)

py > 20

4

13.7 (8.4)

2.7 (1.4)

82.1 (13.4)

3.3 (2.1)

p

 

0.001

0.381

0.552

0.147

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BMC Primary Care

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