After 12 weeks of treatment , the valsartan group significantly improved HOMA-IR from 2.6 + / - 0.9 to 2.3 + / - 0.7 ( p = 0.041 ) and significantly decreased FPG from 90.1 + / - 15.1 to 84.8 + / - 13.2 mg/dL ( p = 0.008 ) .