Girls usually have bladder control before boys do.
The diagnosis of enuresis is for girls over the age of 5 and for boys over the age of 6 that are still having urinary control problems. It affects about 10 to 20 percent of first-grade boys. It affects about 8 to 17 percent of first-grade girls . About 15 percent of all 5 year olds have night-time bedwetting . About 7 percent of 8 year olds have night-time bedwetting .