Fig. 2From: Signs and symptoms do not predict, but may help rule out acute Q fever in favour of other respiratory tract infections, and reduce antibiotics overuse in primary carePredictive performance of the four prediction models tested on their corresponding validation subsets from wave 1 (left column) and the holdout sample from wave 2 (right column). (legend).1at cut-point calculated according to Youden index2based on cut-point calculated according to Youden index and an estimated regional prevalence of 2.9%Back to article page