Table 6-1. Interpretation of Percentile Scores

Hospital Survey on Patient Safety Culture: 2012 User Comparative Database Report

Percentile ScoreInterpretation
10th percentile
Represents the lowest scoring hospitals
10% of the hospitals scored the same or lower.
90% of the hospitals scored higher.
25th percentile
Represents lower scoring hospitals
25% of the hospitals scored the same or lower.
75% of the hospitals scored higher.
50th percentile (or median)
Represents the middle of the distribution of hospitals
50% of the hospitals scored the same or lower.
50% of the hospitals scored higher.
75th percentile
Represents higher scoring hospitals
75% of the hospitals scored the same or lower.
25% of the hospitals scored higher.
90th percentile
Represents the highest scoring hospitals
90% of the hospitals scored the same or lower.
10% of the hospitals scored higher.

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Page last reviewed December 2012
Internet Citation: Table 6-1. Interpretation of Percentile Scores: Hospital Survey on Patient Safety Culture: 2012 User Comparative Database Report. December 2012. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/professionals/quality-patient-safety/patientsafetyculture/hospital/2012/hosp12tab6-1.html