 In the United States, for example, a 1997 study estimated the labor value of unpaid caregiving at billion, while the formal home health care work sector generated billion and nursing home care generated billion.The implication is that since so much personal investment is made in this sector, social programs to increase the efficiency and efficacy of caregivers would bring great benefit to society if they were easy to access and use.The term "caregiver" is used more in the United States, Canada, and China, while "carer" is more commonly used in the United Kingdom, New Zealand, and Australia.