Fig 4. Logit-transformed proportions of highly related 2001–2014 barcode parasite sample pairs with respect to inter-clinic distance.

Annotations refer to site comparisons using abbreviated clinic names (MLA for Maela, 212 parasite samples; WPA for Wang Pha, 457 parasite samples; MKK for Mae Kon Ken, 116 parasite samples; and MKT for Mawker Thai, 388 parasite samples). All parasite samples were single-infection. For inter-clinic pair A and B say, the proportion was based on n_A × n_B parasite sample pairs, where n denotes the number of parasite samples per clinic. Error bars represent 95% confidence intervals based on bootstrapping over highly related parasite sample pair labels (equal to 1 if ${\widehat{\mathit{\pi }}}_{\mathbf{I}\mathbf{B}\mathbf{D}}>\mathbf{0}.\mathbf{5}$ and 0 otherwise), and are therefore zero where there are no ${\widehat{\mathit{\pi }}}_{\mathbf{I}\mathbf{B}\mathbf{D}}>\mathbf{0}.\mathbf{5}$.