Peritoneal dialysis is more convenient, since it is done in the home, but it has fallen out of favor in recent years because of the risk of infection, and doctors feel it is not as effective as hemodialysis. It is more common in third world countries where access to dialysis units is more restricted.
Another factor in using PD is monitoring how much fluid is pulled off, and how much weight the patient gains or loses after and in between treatments. An accurate scale is a must and the patient or helper must be able to determine which solution to use for the next dialysis session in order to get the best results without pulling too much fluid. It's a delicate balance.