3.3 Associations between baseline glucose indices and risk of CKD
Figure 2 shows the incidence of CKD in quartiles of the different baseline glucose indices. The incidence of CKD tended to increase with increasing FPG, 2h OGTT, HbA1c, fasting insulin, and HOMA-IR (all, P for trend < 0.001). No differences of CKD were found in HOMA-β quartiles (P=0.734). HOMA-IR exhibited the strongest correlations with increased risk of CKD in all of the Cox regression analysis models (Table 3). The HR for the risk of CKD in the first (lowest) quartile of HOMA-IR was 1.00 (reference); for the second quartile the HR=1.15 (95 % CI: 0.79-1.69); for the third quartile the HR=1.22 (95% CI: 0.84-1.78); and for the fourth quartile (highest) the HR=1.61 (95% CI: 1.10-2.34).