TABLE 3

Age- and Gender-Adjusted, Drug Group–Specific, Hospital Service Area Variation in Rates of Use (Prescription Fills Per 100 Person Years) by Payer Type

Drug GroupMinimumMaximumMeanMedianRatio of 5th/95th PercentileRatio of Maximum/ MinimumCoefficient of Variation
Antibiotics
 Medicaid52.1112.386.385.21.652.160.14
 Commercial50.5105.676.476.81.592.090.15
ADHD medications
 Medicaid39.7130.479.079.21.953.280.22
 Commercial12.358.334.934.52.484.740.26
Antidepressants
 Medicaid11.144.726.424.52.404.010.27
 Commercial8.137.517.317.72.464.630.29
Antipsychotics
 Medicaid11.852.327.024.62.824.410.34
 Commercial1.017.46.35.93.3717.980.43
Antacids
 Medicaid3.922.211.711.52.885.730.32
 Commercial1.211.76.96.93.099.470.30
  • Antacids include both proton pump inhibitors and histamine2 receptor antagonists. For commercial HSAs, n values ranged from 346 to 50 487 individuals (691–103 175 PYs). For Medicaid HSAs, n values ranged from 525 to 30 336 individuals (767–56 354 PYs).