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Table 1 The general characteristics of age-related macular degeneration patients and the healthy control group

From: Lack of association between three common genetic variations of XPC and susceptibility to age-related macular degeneration, a preliminary study

 ControlCaseχ2 (df = 1)P
Gender    
 Females50450.580.443
 Males6875  
Smoking habit    
 Non-smoker64685.760.016
 Smoker1842  
 Missing3610  
Workplace    
 Indoor66666.210.013
 Outdoor2654  
 Missing260  
Hypertension    
 No1051121.030.309
 Yes48  
 Missing90  
Age63.5 ± 10.069.9 ± 9.7t = 4.76, df = 236< 0.001