ST. PAUL, Minn. (AP) — A statewide survey released Wednesday gives Minnesota consumers a new tool for shopping for health care by showing them how patients rate the quality of their experiences at hundreds of clinics.

More than 230,000 patients were surveyed and 651 clinics were rated in the Minnesota HealthScores survey, a joint project of the Minnesota Department of Health and the nonprofit MN Community Measurement. The results are posted online, and consumers can use them to compare how providers rated. Officials said it's the most comprehensive look yet at patient experiences on a statewide basis anywhere in the U.S. And they acknowledged the scrutiny might make some doctors and clinics nervous.

"When somebody's looking over our shoulder, and kind of grading us, there's a little bit of anxiety. But the worst is if you're not going a good job and you don't know it," Dr. Ed Ehlinger, the state's health commissioner, told reporters.