1) Most toddlers urinate between four and eight times per day and it is usually every two hours or so.

2) Most toddlers have one to two bowel movements per day. 

3) Most toddlers have regular pattern for bowel movements i.e. they will have go at about the same time each day.

4) A child elimination (sphincter) muscles reach full maturity somewhere between the age of 12 and 24 month, with the average age if 18 months.

5) Potty training can begin at any age - however, independent toileting can only mastered after the child is ready - which is anywhere between the ages of two and four.

6) Potty Training is an acquired skill just like walking, talking and running AND each child acquires these skills when he or she is ready.  Mastering these skills bears no correlation to intellingence or future abilities.

7) The "best time" or window for potty training is when your child is between the age of 18 months and 32 months old.  However, each child is different, so the perfect age for each child is different.

There is a difference between being potty trained during the day and the night.  Night time dryness is only a concern after the age of 6.  At the age of 5 years, 15-20% of children are still wetting at night 2-3 times per month.

9) Constipation in toddlers refers to infrequent (less than 3 BMs per week) or incomplete bowel movements.  A toddler between the age of 1 and 3 should have 4-12 BM per week or on the average - 1.4 BMs/week.  Over the age of 3, it is 3-14 BMs per week, or on the average 1 BM per day.

10) More than 80% of children experienc set -backs in potty training.