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Table 4 The pulmonary function indexes in control and CB-exposed groups (mean ± SD)

From: Reduced pulmonary function and increased pro-inflammatory cytokines in nanoscale carbon black-exposed workers

Variables

Control group (n = 104)

CB-exposed group (n = 81)

P-value

FEV1 (%)

103.61 ± 14.52

98.07 ± 13.53

0.019a

FVC (%)

104.67 ± 14.64

100.12 ± 13.47

0.071a

FEV1/FVC

0.87 ± 0.05

0.84 ± 0.05

0.001a

PEF (%)

93.76 ± 17.86

78.50 ± 16.80

<0.001a

MMF (%)

96.45 ± 23.18

86.86 ± 23.06

0.001a

  1. aTwo-sample t test. Differences were considered significant when P < 0.05. FVC%: percent predicted forced vital capacity, FEV1%: percent predicted forced expiratory volume in 1 second, MMF%: percent predicted maximal midexpiratory flow curve, and PEF%: percent predicted peak expiratory flow.
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Particle and Fibre Toxicology

ISSN: 1743-8977

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