Fig. 1From: Environmental quality standards for diclofenac derived under the European water framework directive: 2. Avian secondary poisoningLogistic regression of vulture data from Oaks et al. [45], Swan et al. [55], and Naidoo et al. [43]. A: with outlier. B: without outlier. Solid line is the regression estimate and dashed lines are the 95% confidence intervalBack to article page