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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