Baseline factor levels and other determinants affect DDAVP response. Complete response rate according to the study definition is plotted against possible determinants for DDAVP response per disease. Bubble size indicates the population size per study. Color indicates RoB of the study: low (light red), moderate (red), or high (dark red) RoB. The fitted values of the meta-regression are indicated by the black dotted line. Odds ratio with confidence interval and P value are shown above the x-axes.