You can now read 5 articles in a month for free on BostonGlobe.com. Read as much as you want anywhere and anytime for just 99¢.

Red Sox Live

2

3

▼  6th Inning 1 outs

How the nursing home data were analyzed

The Boston Globe examined data on more than 15,600 nursing homes across the nation for its investigation of antipsychotic drug overuse. The information was supplied by the US Centers for Medicare & Medicaid Services, 19 months after a Freedom of Information Act request was submitted. There were two sets of data:

■The percentage of long-term residents without a psychosis or related condition who received antipsychotics contrary to federal nursing home regulators’ recommendations.

Continue reading below

■The characteristics of each home, such as staffing levels, number of patients on Medicaid, and the number reported by staff to have behavioral problems.

The information, which CMS compiled from data reported by nursing homes, was for the third quarter of each year between 2005 and 2010, the most recent year for which data were available. Long-term residents are those in nursing homes longer than 90 days. Nursing home regulators include these illnesses as a psychosis or related condition: hallucinations, Huntington’s disease, schizophrenia, and Tourette’s.

The information from the two tables was merged to create one database. For some nursing homes, there were multiple entries for a single year, or no entries. That’s because nursing homes might be inspected twice in some years and none in others. In such cases, data from the inspection closest to the third quarter of each year were used.

The nursing homes were sorted by the percentage of patients who received antipsychotic drugs contrary to regulators’ recommendations. The homes were broken into quartiles and a median was calculated for each quartile. Nursing homes with fewer than 50 residents were excluded because a handful of residents on antipsychotic drugs could significantly alter the percentage.

The Globe asked a CMS data analyst to review the findings to ensure the validity of the methods and the accuracy of the data.

Loading comments...
Subscriber Log In

We hope you've enjoyed your 5 free articles'

Stay informed with unlimited access to Boston’s trusted news source.

  • High-quality journalism from the region’s largest newsroom
  • Convenient access across all of your devices
  • Today’s Headlines daily newsletter
  • Subscriber-only access to exclusive offers, events, contests, eBooks, and more
  • Less than 25¢ a week
Marketing image of BostonGlobe.com
Marketing image of BostonGlobe.com
Already a subscriber?
Your city. Your stories. Your Globe.
Yours FREE for two weeks.
Enjoy free unlimited access to Globe.com for the next two weeks.
Limited time only - No credit card required!
BostonGlobe.com complimentary digital access has been provided to you, without a subscription, for free starting today and ending in 14 days. After the free trial period, your free BostonGlobe.com digital access will stop immediately unless you sign up for BostonGlobe.com digital subscription. Current print and digital subscribers are not eligible for the free trial.
Thanks & Welcome to Globe.com
You now have unlimited access for the next two weeks.
BostonGlobe.com complimentary digital access has been provided to you, without a subscription, for free starting today and ending in 14 days. After the free trial period, your free BostonGlobe.com digital access will stop immediately unless you sign up for BostonGlobe.com digital subscription. Current print and digital subscribers are not eligible for the free trial.