Statistical Ratings

Stars compare each health plan’s rating or composite score to the Utah average. Separate averages were calculated for commercial and Medicaid health plans. The 95% confidence interval was used to determine statistically significant differences between a health plan’s score and the state average. Three stars indicate that a health plan’s performance on a particular measure is significantly above the state average, while one star means that a health plan’s performance is significantly below the state average. Two stars indicate that a health plan’s performance on a particular measure is not significantly different from the state average. A standardized NCQA data analysis program was used to compute the star ratings.

	Higher	HMO score is significantly above the average for Utah HMOs
	Average	HMO score is neither higher nor lower than the average for Utah HMOs
	Lower	HMO score is significantly below the average for Utah HMOs

Note: Statistical ratings were not computed for Medicaid and CHIP HMOs since only two plans in each program reported CAHPS measures in 2007