Quality of life will be assessed by The Pediatric Quality of Life Inventory (PedsQL
The PedsQL 4.0 Generic Core Scales instrument is the last version of PedsQL contain 23-items, including formats for typically developing children and adolescents 2 to 18 years old, and consists of the following:
Physical functioning (8 items). Emotional functioning (5 items). Social functioning (5 items). School functioning (5 items).
Each item of the instrument is scored on a 5-point scale from 0- 4 for ages 8-18, (0 = never a problem, 1 = almost never a problem, 2 = sometimes a problem, 3 = often a problem, 4 = almost always a problem) ad 3-point scale for young child self-reporting (ages 5- 7) as following (0 = not at all a problem, 2 = sometimes a problem, 4 = a lot of a problem) the large score means worst symptoms , scores are linearly transformed to a 0-100 scale (0 = 100, 1 = 75, 2 = 50, 3 = 25, 4 = 0) in which high score means better condition.