Fig. 2
From: Risk factors for preoperative deep venous thrombosis in hip fracture patients: a meta-analysis
Forest plot showing age in 2 groups. CI confidence interval, df degrees of freedom, M-H Mantel–Haenszel. a Relationship between age at surgical time and preoperative DVT; b 60–70 years vs > 90 years; c 70–80 years vs > 90 years; d 80–90 years vs > 90 years; e 60–70 years vs 70–80 years; f 60–70 years vs 80–90 years; g 70–80 years vs 80–90 years