It certainly helps keep the office quieter. Small children have an innate fear of going up on the table. In my humble opinion, routinely holding small children down on the table is pretty much a disqualifier for serious consideration as a child's physician. I leave as much of the clothing on as possible. With little children, it really is not necessary to strip them naked to do a decent exam.
Most physicians know enough to give the kids a little treat of some sort at the end of the visit.
For me it's sugarless lollipops and stickers. The treat is not conditional on good behavior. It is not bribery. It is a gesture of love and acceptance, the only message small children really need to get. I often sing to the child as I examine the chest and heart.