Table 5

Generalised estimating equations testing effect of CRP and ESR on SEVR, MBP and augmentation index

Outcome

Effect of CRPa

Effect of ESRa

Coefficient (95% CI)

P value

Coefficient (95% CI)

P value


SEVRa

-0.031 (-0.059 to -0.004)

0.02

-0.028 (-0.079 to 0.023)

0.28

MBPa

0.009 (-0.009 to 0.026)b

0.34b

-0.009 (-0.033 to 0.015)b

0.48b

AIx

5.434 (1.769 to 7.299)

0.001

-1.887 (-4.877 to 1.104)

0.22


AIx, augmentation index; CI, confidence interval; CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; MBP, mean blood pressure; SEVR, subendocardial viability ratio. From a generalised estimating equation, with unstructured correlation structure, unless stated otherwise. aLog10-transformed prior to analysis. bExchangeable correlation structure used.

Sandoo et al. Arthritis Research & Therapy 2012 14:R258   doi:10.1186/ar4103

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