Meta-analysis investigating the use of prophylactic subcutaneous unfractionated or low-molecular weight heparin after hip fracture repair to prevent deep vein thrombosis . Endpoint: non-fatal pulmonary embolism (total of 8 events in 245 patients in the intervention group and 0 events in 292 patients in the control group). For a description of bar charts and plots see figure legend for Figure 1.
Friedrich et al. BMC Medical Research Methodology 2007 7:5 doi:10.1186/1471-2288-7-5