Correlation of hematological indices and ratios derived from them with FIQR scores in fibromyalgia

Abstract

Objectives: To determine the hematological indices and ratios derived from them in patients with fibromyalgia and to correlate the scores of Fibromyalgia Impact Questionnaire Revised (FIQR) with the ratios.

Methods: This case control study was performed in the College of Pharmacy at Hawler Medical University in Erbil-Iraq, from November 2016 to June 2017, and it included 40 healthy subjects (Group I) and 150 newly diagnosed FM (Group II). The American College of Rheumatology -10 (ACR-10) diagnostic criteria were used in the diagnosis of FM. The scores of the Revised Fibromyalgia Questionnaire Impact (FIQR), and tender points were calculated, and the hematological indices and ratios were determined.

Results: Group II showed significantly higher mean values of hematological indices and the ratios of neutrophil to lymphocyte (NLR), derived neutrophil to lymphocyte (dNLR) and platelet to lymphocyte (PLR). Group II patients have a significant higher score of FIQR. A significant correlation between the total score of FIQR with the hematological ratios (F=4.143, R=0.355, R²=0.126, p=0.002) with a variability of 12.6%.

Conclusion: We conclude that the hematological indices are significantly altered and they are significantly correlated with the total score of fibromyalgia impact questionnaire revised.

Keywords: Diagnosis; Fibromyalgia; Hematological indices; Prediction.

Fig.1

Multivariable linear regression plot taking the score of fibromyalgia impact questionnaire (FIQR) as dependent variable and neutrophil to lymphocyte ratio; derived neutrophil to lymphocyte ratio; platelet to lymphocyte ratio; lymphocyte to monocyte ratio; and monocyte to high density lipoprotein ratio as independent variables. (F=4.143, R=0.355, R²=0.126, p=0.002).