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Table 3 Acute respiratory symptoms and peak expiratory flow (PEF) among 60 male cement factory workers

From: Cement dust exposure and acute lung function: A cross shift study

Acute respiratory Symptoms, n (%)

Departments

Exposed groups

Significance levels (p)

 

Crusher

(n = 20)

Packing

(n = 20)

High exposed

(n = 40)

Low exposed

(n = 20)

High exposeda vs Low exposed

Crusher vs Pacing

Cough

4(20)

8(40)

12(30)

2(10)

0.112b

0.168c

Wheezing

6(30)

8(40)

14(35)

0(0)

0.002b

0.507c

Shortness of breath

9(45)

10(50)

19(47)

1(5)

0.001b

0.752c

Stuffy nose

19(95)

15(75)

34(85)

0(0)

< 0.0005b

0.077c

Sneezing

9(45)

9(45)

18(45)

1(5)

0.002b

1.000c

Runny nose

4(20)

6(30)

10(25)

0(0)

0.023b

0.465c

Peak expiratory

      

Flow, AM (SD)

   

(n = 10)

  

Preshift PEF (l/m)

455(84.9)

505(65.2)

480(78.9)

429(83.2)

0.024d

0.043d

Postshift PEF (l/m)

437(94.3)

483(67.6)

459(84.2)

455(84)

0.85d

0.087d

ΔPEF%

-4.2(8.9)

-4(10.5)

-4.1(9.6)

6.8(10.7)

< 0.0005d

0.949d

  1. aHigh exposed = Crusher + Packing, bFisher's exact tests, cChi-square tests, dIndependent t-test