(A) Mean responses of VWF antigen to DDAVP, in vivo, with 95% CIs.The mean response was significantly greater 1-hour and 4-hours post-DDAVP compared with baseline (P=0.0085 and 0.0079, respectively). After 1-hour post-DDAVP, the mean response was 201% greater (95% CI: 129%, 314%) than baseline. After 4-hours, the mean response was 174% greater (95% CI: 123%, 247%) than baseline. (B) Responses of FH to DDAVP, in vivo. There was no statistically significant difference in FH response between time points (P=0.77).