INS and Ketonuria: Compared to the nonketonuria group, the ketonuria group was younger (41.1 ± 10.0 vs. 44.6 ± 11.2 years, p < 0.001), had lower levels of FPG (87.2 ± 9.1 vs. 91.0 ± 8.1 mg/dL, p < 0.001), insulin (4.1± 2.3 vs. 6.2 ± 3.7 microU/mL, p < 0.001), and HOMA-IR (1.0 ± 0.5 vs. 1.5 ± 0.9, p < 0.001).