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Table 4 FeNO levels and peripheral blood result for the patients

From: Association between fractional exhaled nitric oxide, sputum induction and peripheral blood eosinophil in uncontrolled asthma

Variables

Sputum eosinophilia

(n = 52)

Sputum noneosinophilia

(n = 23)

p-value

Age, years

58 (50, 66)

64 (59, 76)

0.224

Males, n (%)

30 (57.7)

12 (52.2)

0.657

Mean body mass index, kg/m2

23.3 (3.86)

22.98 (3.03)

0.476

Smokers, n (%)

23 (44.2)

9 (39.1)

0.68

Postbronchodilator FEV1% predicted

80.48 (8.57)

84.7 (17.02)

0.07

Postbronchodilator FEV1 (L)

2.06 (0.58)

1.81 (0.51)

0.548

Postbronchodilator FEV1/FVC (%)

68.12 (8.95)

68.82 (7.7)

0.297

FeNO level (ppb)

48 (25, 92)

24 (19, 47)

0.011

Neutrophil (%) in sputum

74.36 (18.11)

87.7 (10.55)

0.062

White blood cell (×109/L)

7.3 (6.2, 9.6)

8.5 (6.5, 10.3)

0.192

Eosinophil (%) in peripheral blood

1.8 (0.6, 4.8)

0.5 (0.2, 1.8)

0.003

Eosinophil count in peripheral blood (×109/L)

0.1 (0.1, 0.3)

0 (0, 0.2)

0.016

  1. Sputum eosinophilia refers to sputum eosinophils ≥ 2.5%; sputum noneosinophilia refers to sputum eosinophils < 2.5%. Significant p value < 0.05