Table 10 Difference Test of Symptom Frequency in Immune and endocrine system before and after Matching.

From: Health status among greenhouse workers exposed to different levels of pesticides: A genetic matching analysis

  

Before matching

After matching

Low exposure

High exposure

χ2

P

Low exposure

High exposure

χ2

P

Cold

   

2.178

0.336

  

0.546

0.761

 

Nothing

634

242

  

244

242

  
 

Light

295

134

  

129

134

  
 

Middle

47

16

  

20

16

  

Blood does not clot easily

   

0.269

0.874

  

0.049

0.976

 

Nothing

941

380

  

379

380

  
 

Light

30

10

  

11

10

  
 

Middle

50

2

  

2

2

  
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