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Table 3 Statistics for each categorical individual variable by CMS and non-CMS groups in 2009 and 2010

From: Burden of disease resulting from chronic mountain sickness among young Chinese male immigrants in Tibet

Variable 2009 2010
CMS Non-CMS p * CMS Non-CMS p *
Smoking       
No 122 291 0.030 118 328 <0.001
Yes 199 351   197 302  
Drinking       
No 287 555 0.191 277 547 0.630
Yes 34 87   38 83  
Education       
≤Junior school 132 268 0.261 145 260 0.338
High school 173 325   142 315  
≥College 16 49   28 55  
Occupation       
Regular infantry 117 294 <0.001 124 284 <0.001
Engineering and construction 128 121   111 136  
Support 76 227   80 210  
Total 321 642   315 630  
  1. *: p-value based on chi-squared test.