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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

 

Control

Case

χ2 (df = 1)

P

Gender

    

 Females

50

45

0.58

0.443

 Males

68

75

  

Smoking habit

    

 Non-smoker

64

68

5.76

0.016

 Smoker

18

42

  

 Missing

36

10

  

Workplace

    

 Indoor

66

66

6.21

0.013

 Outdoor

26

54

  

 Missing

26

0

  

Hypertension

    

 No

105

112

1.03

0.309

 Yes

4

8

  

 Missing

9

0

  

Age

63.5 ± 10.0

69.9 ± 9.7

t = 4.76, df = 236

< 0.001