Calculating Quality Measures
Quality ratings on CompareMaine are displayed using a five bar icon. More bars mean better performance, with five bars indicating the best. Fewer bars mean worse performance on the selected measures, with one bar indicating the worst.
The performance of facilities on the quality measures is compared to state and national averages (except for patient experiences at hospitals, where state and national averages are not available). The performance rating for a facility may differ depending on which comparison is being made.
For serious complications and healthcare-associated infections (HAIs), the ratings for both the state and national averages are calculated by CMS (the data source). CMS compares each facility performance to the national average, using confidence intervals. If the facility's confidence interval overlaps with the state confidence interval, then the facility is considered "average," and receives a rating of three bars on CompareMaine. If the facility's interval is below the state interval, then the facility is performing "above average" and receives a rating of five bars. If the facility's interval is above the state interval, then the facility is performing "below average" and receives a rating of one bar.
Patient experience ratings are determined slightly differently. For the PCMH-CAHPS measure, the process is similar to the one described above for serious complications and HAIs. However, MHDO calculates the confidence intervals for each facility itself, as well as the state confidence interval. For HCAHPS, CompareMaine reports the CMS Summary Star Rating, with one bar for each star. For example, a facility that received five stars would have a rating of five bars. CMS calculates the Summary Star rating by combining the average scores for nine individual HCAHPS star-ratings. CMS does not calculate a national or state average number of stars; consequently, MHDO chose not report these comparisons. To be consistent with other measures on the site, MHDO uses bars rather than stars to represent the rating on CompareMaine. Visit HCAHPS for more information on the Summary Star rating.