CCL13 and Sciatica: The CCL2 measurement (p = 0.046, OR = 1.00115, 95% CI = 1.00002–1.00227), monocyte chemotactic protein-4 measurement (p = 0.027, OR = 1.00112, 95% CI = 1.00013–1.00211), protein S100-A12 measurement (p = 0.009, OR = 1.00113, 95% CI =1.00028–1.00198) are positively correlated with sciatica (as shown in Figure 2).