Association between admission hemoglobin level and prognosis in patients with type 2 diabetes mellitus

Figure 3 A U-shaped relationship was observed between hemoglobin levels and the composite endpoint. The curve tended to reach the lowest level at an optimal hemoglobin level (approximately 13.3 g/dL). The red line denotes fitted curves, and the blue lines represent 95%CI for the association between hemoglobin levels and the composite endpoint. Adjusted for (model 4): Age, gender, body mass index, baseline estimated glomerular filtration rate, history of hypertension, systolic blood pressure, diastolic blood pressure, 24 h urinary protein, angiotensin-converting enzyme inhibitors and/or angiotensin receptor blockers use, albumin, total cholesterol, triglycerides, duration of diabetes, fasting glycaemia, and glycosylated hemoglobin.