Non-obese adult onset diabetes with oral hypoglycemic agent failure: islet cell autoantibodies or reversible beta cell refractoriness? J.R. Sá, R.C. Silva, F. Nasri, L.C.M. Aguade, L. Velloso, A.R. Chacra and S.A. Dib. Brazilian Journal of Medical and Biological Research, 36 (10): 1301, 2003.

Figure 1. Comparison of fasting C-peptide (nmol/l) levels between autoantibody-positive (Ab+) and autoantibody-negative (Ab-) diabetic patients with oral hypoglycemic agent failure before and after insulin treatment (Tx). The statistical tests used were Mann-Whitney rank-sum test and Wilcoxon signed rank test.