The data show more than 8 percent of California's long-term nursing home residents were physically restrained in 2008.
More than a quarter of short-stay nursing home patients in the state had pressure sores.
California ranked lowest of the states in these areas.
Bill Freeman of the Agency for Health Care Research and Quality says he hopes policymakers will use the information.
FREEMAN: "Nowadays it's actually recommended not to have patients physically restrained. There are better ways of keeping patients controlled."
Pat McGinnis of the California Advocates for Nursing Home Reform said she's not surprised by the findings.
McGINNIS: "We literally get hundreds and hundreds of calls every single week from family members complaining about the quality of care that their relatives are receiving."
The Department of Public Health said it could not review the report by airtime, but wrote they want to "protect the health and safety" of Californians.