The Health and Social Care Information Centre has said there appears to be an association between hands-on restraint and the administration of anti-psychotic medication on inpatients with learning disabilities.
Kingsley Manning, chair of the HSCIC, said: "The Learning Disabilities Census, and this further analysis, is an important contribution to understanding how episodes such as those seen at Winterbourne View Hospital can be avoided in the future."
Some 40% of the 2,220 given these drugs experienced at least one instance of hands-on restraint compared to 21.5% of the 1,030 who were not given any of this medication. And 78% of service users were subject to the Mental Health Act on census day, compared with 22% classified as informal patients.
More top news
The driver stopped at the scene and the boy was taken to hospital, but he died on the way.
Sunday Times restaurant critic AA Gill has died at the age of 62, three weeks after revealing he had cancer.
The Oscar-winning actress has faced a backlash after telling a story about itching her "butt" on sacred Hawaiian rocks.