Table 1.

95% confidence intervals of overuse estimates across a range of within-hospital patient sample sizes and overuse rates

	n = 20	n = 60	n = 100
30% overuse	11.9–54.3%	18.8–43.2%	21.2–40.0%
70% overuse	45.7–88.1%	56.8–81.2%	60.0–78.8%