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Table 2 Anti-CCP levels by gender, age, year of birth, and smoking status

From: Linkage analysis of anti-CCP levels as dichotomized and quantitative traits using GAW15 single-nucleotide polymorphism scan of NARAC families

Covariate

Values

N

anti-CCP mean

SD

t test P

Sex

Female

1153

112.19

102.58

<0.001

 

Male

346

143.24

100.19

 

Age of onset

<40

758

119.70

97.53

 
 

≥40

722

119.89

108.01

nsa

Year of birth

<1944

754

119.34

97.53

 
 

≥1944

738

119.50

108.01

ns

Smoking

Never

618

110.54

100.38

 
 

Ever

832

126.13

104.91

0.004

 

Current

244

119.84

105.32

 
 

Never or former

1211

119.44

102.79

ns

  1. ans, not significant
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BMC Proceedings

ISSN: 1753-6561

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