Association between anemia and the risk of diabetic foot ulcer: A meta-analysis

Figure 2 Forest plots for the meta-analysis of the association between anemia and the risk of diabetic foot ulcers in patients with diabetes. A: Overall meta-analysis; B: Subgroup analysis according to study design; C: Subgroup analysis according to the mean ages of the patients; D: Subgroup analysis according to the proportion of men of the included patients; E: Subgroup analysis according to the analytic models; F: Subgroup analysis according to the Newcastle–Ottawa Scale scores of the included studies. NOS: Newcastle–Ottawa Scale.