The use of restrictive methods in the Lakewood centre has been defended by those in charge of the facility.
“I deserve to know the truth because my dad cannot uncover the facts. This is for him.”
The situation has been described as “shocking'' and “deeply disappointing”.
They oppose a public inquiry's call for a legal requirement of honesty for individuals working in healthcare.
Numbers of people in employment are to the nearest hundred thousand. Numbers for each year were taken in the first quarter of each year in question.