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Table 2 Distribution of C4 polymorphisms in individuals with or without Graves' disease

From: Association between copy number variation of complement component C4 and Graves' disease

Variations

GD

P value, individuala

[OR (95%CI), individual]c

P valueb

OR (95%CI)d

 

No, N (%)

Yes, N (%)

   

C4 CNV

     

4

57 (35.6)

314 (50.3)

0.001 [10.994 (6.277-19.255)]

0.002

(Reference)

< 4

52 (32.5)

134 (21.5)

0.003 [0.512 (0.338-0.776)]

 

0.389 (0.245-0.615)

> 4

51 (31.9)

176 (28.2)

0.361

 

0.497 (0.317-0.780)

C4A CNV

     

2

83 (51.9)

395 (63.3)

0.008 [1.732 (1.190-2.520)]

0.011

(Reference)

< 2

33 (20.6)

79 (12.7)

0.010 [0.584 (0.360-0.948)]

 

0.509 (0.307-0.843)

> 2

44 (27.5)

150 (24.0)

0.365

 

0.628 (0.404-0.977)

C4B CNV

     

2

67 (41.9)

377 (60.4)

2.420 × 10-5 [2.621 (1.791-3.835)]

1.328 × 10-4

(Reference)

< 2

53 (33.1)

143 (22.9)

0.008 [0.487 (0.322-0.738)]

 

0.374 (0.240-0.584)

> 2

40 (25)

104 (16.7)

0.015 [0.545 (0.347-0.856)]

 

0.391 (0.241-0.636)

C4 polymorphisms

     

A2B2

39 (24.4)

254 (40.7)

1.395 × 10-4 [2.671 (1.761-4.052)]

3.87 × 10-6

(Reference)

A2B1

22 (13.8)

78 (12.5)

0.672

 

0.409 (0.219-0.763)

A3B2

16 (10.0)

64 (10.3)

0.924

 

0.539 (0.273-1.064)

A2B3

5 (3.1)

44 (7.1)

0.067

 

0.961 (0.343-2.697)

A3B1

10 (6.3)

32 (5.1)

0.574

 

0.373 (0.159-0.876)

A1B2

6 (3.8)

34 (5.4)

0.384

 

0.687 (0.257-1.836)

Other

62 (38.8)

118 (18.9)

  

0.242 (0.148-0.396)

  1. Abbreviations: GD, Graves' disease; CNV, copy number variation; OR, odds ratio; CI, confidence interval; N, number.
  2. aIndividual C4 CNVs and polymorphisms between individuals with or without GD were evaluated by Fisher's exact test using 2 × 2 contingency tables.
  3. b CNV of C4, C4A and C4B between individuals with or without GD were evaluated by Fisher's exact test using 3 × 2 contingency tables.C4 polymorphisms between individuals with or without GD were evaluated by Fisher's exact test using 7 × 2 contingency tables. The p value was estimated by 100,000 Monte Carlo simulations with 99% confidence intervals (CI).
  4. cORs and 95% CIs were estimated from logistic regression models adjusting for age.
  5. dORs and 95% CIs were estimated from logistic regression models adjusting for age.