Fig. 3

Radar chart of the diagnostic accuracy of the treating physician’s diagnosis for each major cause of TLOC. Diagnostic accuracy was expressed as the proportion of cases with a correct diagnosis according to the reference standard. Data are presented per diagnostic category for the usual care group (red line) and the syncope guidelines (green line). For each category, the total number of cases in both groups is given. The radius of the circles reflects the standard error of the proportion. OH, orthostatic hypotension; TLOC, transient loss of consciousness