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Table 2 Laboratory parameters of study groups based on disease activity

From: Neutrophil/lymphocyte and platelet/lymphocyte ratios as potential markers of disease activity in patients with Ankylosing spondylitis: a case-control study

 Control
(n = 81)
BASDAI< 4
(n = 77)
BASDAI≥4
(n = 55)
P value
White blood cell count (109/L)7.31 ± 1.497.85 ± 1.658.56 ± 1.81<  0.001
P1 = 0.097
P2 < 0.001
P3 = 0.040
Neutrophil count (109/L)4.51 ± 0.984.53 ± 1.335.30 ± 1.510.001
P1 = 0.994
P2 = 0.001
P3 = 0.002
Lymphocyte count (109/L)2.30 ± 0.512.76 ± 0.762.65 ± 0.92< 0.001
P1 < 0.001
P2 = 0.019
P3 = 0.661
Platelet count (109/L)263.08 ± 50.56257.58 ± 62.38331.96 ± 103.22< 0.001
P1 = 0.879
P2 < 0.001
P3 < 0.001
NLR2.02 ± 0.551.77 ± 0.732.31 ± 1.230.002
P1 = 0.138
P2 = 0.131
P3 = 0.001
PLR99.32 ± 33.97119.24 ± 32.49142.04 ± 70.98< 0.001
P1 = 0.019
P2 = 0.014
P3 < 0.001
ESR (mm/hr.)1.40 ± 3.4815.31 ± 33.2312.31 ± 25.86< 0.001
P1 < 0.001
P2 = 0.013
P3 < 0.001
  1. AS, ankylosing spondylitis; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; ESR, erythrocyte sedimentation rate; n, number; NLR, neutrophil/lymphocyte ratio; PLR, platelet/lymphocyte ratio; P value, probability value (< 0.05); P1, Control vs. BASDAI < 4; P2, Control vs. BASDAI ≥4; P3, BASDAI ≥4 vs. BASDAI < 4
  2. Comparisons of parametric data of three groups were performed with One-Way ANOVA test. Post-hoc Tukey Test was used for differences between the three groups