Each item scored on a 5 point scale (range 0-4) and measure of symptom severity is obtained by summing item scores. To obtain a measure of symptom severity, sum marked responses of the total and/or the respective sub-scales. Mean score: divide sum-score by respective number of scale items.
Laws aside, kids aren't ready to make the switch from a booster seat to seat belts until they're at least 4 feet 9 inches tall and can pass the five-step test below â typically between ages 8 and 10.
1 â 8 years old or 4 ft 9 inches tall. 2  Use a booster seat in the back seat until your child is big enough to use the car's seat belt.. 3  8 years old or 4 ft 9 inches tall â12 years old. 4  Have your child sit in the backseat with a seatbelt. 5  At 13 years old, your child can sit in the front seat of your car.