Fig. 2

Associations of hemoglobin levels and frail using restricted cubic spline models in low- (A) and high- (B) dietary fiber intake groups. All models were adjusted for age, gender and ethnicity, marital status, education, BMI, smoking status, total cholesterol/high density lipoprotein cholesterol, hypertension, diabetes, cardiovascular disease, antihypertensive drugs, hypoglycemic agents, lipid-lowering drugs, antiplatelet drugs