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Table 3 Multivariate logistic regression results for SP type (no SP - reference group, non-neuritic SP and neuritic SP) and association with CRP haplotypes (APOE4 carriership and age were included as covariates)

From: CRP gene variation affects early development of Alzheimer's disease-related plaques

     

Non-Neuritic SP

Neuritic SP

  

Assoc.

Total

Prev %

Affected (%)

OR

CI

p

Affected (%)

OR

CI

p

TTGTC

Yes*

High-CRP

306

37.0

26

8.5

1

Ref

-

62

20.3

1

Ref

-

(1)

No

 

225

 

26

11.6

1.402

0.740 - 2.656

0.300

41

18.2

0.776

0.435 - 1.383

0.390

TCGCC

No*

No assoc.

516

 

52

10.1

1

Ref

-

96

18.6

1

Ref

-

(3)

Yes

 

15

1.2

0

0.0

.

.

.

7

46.7

4.124

0.700 - 24.278

0.117

TCGCT

No*

No assoc.

282

 

22

7.8

1

Ref

-

61

21.6

1

Ref

-

(4)

Yes

 

249

30.0

30

12.0

1.397

0.736 - 2.651

0.307

42

16.9

0.686

0.386 - 1.217

0.197

TCCCT

No*

Low-CRP

in females

459

 

44

9.6

1

Ref

-

89

19.4

1

Ref

-

(5)

Yes

 

72

6.6

8

11.1

1.545

0.655 - 3.644

0.321

14

19.4

0.775

0.312 - 1.923

0.582

TAGCC

No*

High-CRP

471

 

40

8.5

1

Ref

-

91

19.3

1

Ref

-

(6)

Yes

 

60

5.2

12

20.0

2.985

1.342 - 6.638

0.007a

12

20.0

1.809

0.785 - 4.167

0.164

CCGCC

No*

Low-CRP

in males

324

 

37

11.4

1

Ref

-

69

21.3

1

Ref

-

(7)

Yes

 

207

19.5

15

7.2

0.453

0.218 - 0.941

0.034a

34

16.4

0.680

0.376 - 1.228

0.201

  1. * denotes the most common haplotype acting as the reference group in analyses.
  2. . denotes the values were unable to be computed.
  3. adenotes statistically significant values.
  4. Numbers in brackets referring to our own number allocation system for haplotypes.
  5. Haplotypes consist of SNPs rs2794521 (T > C), rs3091244 (C > T > A), rs1800947 (G > C), rs1130864 (C > T) and rs1205 (C > T).
  6. Non-neuritic SP are diffuse and primitive SP grouped together, neuritic SP are classic and burnt out SP grouped together; as measured by a neuropathologist.
  7. Prev % refers to prevalence of alleles.
  8. Assoc. refers to associations with CRP levels.
  9. CRP = c-reactive protein gene, SP = senile plaques, N = Number of cases, OR = odds ratio, CI = confidence interval, p = p value.