Direct and Indirect treatment differences based on the PP approach with the M3 model (Study # 2, excluded). γ represents the logarithm of the cumulative OR. Each treatment is compared to ASAQ (γ 1=0). Solid lines mean that the corresponding treatments were tested within the same study, whereas dashed lines correspond to treatments compared between different studies. Values in bold are significant differences. * means that a correlation is taken into account for CI (credibility interval) as AQ, ASSP and ASAQ are tested within the same study.