CRP and diabetes mellitus: Further, after adjustment for age, SBP, diabetes duration, FPG, 2 h-PG, HbA1c, and HBG, compared to the Q1 of CRP/HDL-C, the Q3 and Q4 groups still had a markedly increased risk of DR by 190.5% (OR 2.905, 95% CI: 1.372 ~ 6.152, p = 0.005) and 893.8% (OR 9.938, 95% CI: 4.987 ~ 19.804, p < 0.001), separately, while no difference was observed in Q2 group (OR 1.803, 95% CI: 0.825 ~ 3.940, p = 0.139).