CRP and appendicitis: Compared with the uncomplicated appendicitis group, the complicated appendicitis group had a longer right lower quadrant (RLQ) pain duration (1.6 ± 1.0 vs. 2.5 ± 1.6 days, P < 0.0001), higher body temperature (36.8 ± 0.6 vs. 37.2 ± 0.8 °C, P = 0.0008), higher neutrophil to lymphocyte ratio (NLR; 8.9 ± 7.7 vs. 13.8 ± 0.7, P = 0.0008), and higher CRP level (2.9 ± 4.2 vs 12.8 ± 11.3, P < 0.0001).