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Table 5 Changes in pulmonary function† during work

From: Pulmonary function, respiratory symptoms, and dust exposures among workers engaged in early manufacturing processes of tea: a cohort study

  

All subgroups

(N = 58)

Withering subgroup

(N = 39)

Ball-rolling subgroup

(N = 19)

FVC

%

-3.64

-3.33

-4.26

 

p*

< 0.01

< 0.01

< 0.01

 

p**

 

0.59

 

FEV1

%

-4.71

-4.05

-6.05

 

p*

< 0.01

< 0.01

< 0.01

 

p**

 

0.28

 

FEV1/FVC

%

-1.11

-0.74

-1.87

 

p*

0.04

0.24

0.05

 

p**

 

0.36

 

MMF

%

0.50

0.08

1.38

 

p*

0.34

0.42

0.62

 

p**

 

0.84

 
  1. *p values for paired t tests in comparison with the baseline values
  2. **p values for two-sample t tests between the withering group and the ball-rolling group
  3. † FVC forced vital capacity, FEV1 1-second forced expiratory volume, MMF maximal mid-expiratory flow rate
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BMC Public Health

ISSN: 1471-2458

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