Co-occurring intellectual disability and autism: Associations with stress, coping, time use, and quality of life in caregivers

•Co-occurring ID had a significant impact on the way caregivers used their time.•Caregivers of children with co-occurring ID spend significantly less time preparing meals during the week and socialising with friends.•Caregivers of children with co-occurring ID accessed significantly more in-home respite care.•Co-occurring ID did not place an additional burden on caregivers or influence their quality of life; all caregivers of children on the autism spectrum require support.