Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2012 Jul 19;2(4):e000731. doi: 10.1136/bmjopen-2011-000731

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2012, Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited, the use is non commercial and is otherwise in compliance with the license. See: http://creativecommons.org/licenses/by-nc/2.0/ and http://creativecommons.org/licenses/by-nc/2.0/legalcode.

PMC Copyright notice

Starter group and Continuation group of chronic analgesic treatment. Schedule of prescriptions (Rx) in the Starter group (top) and the Continuation group (bottom) of chronic analgesic treatment covering a 12-month period. Months 7–12 are the observation period; months 1–6 are the pre-observation period. Patients in the Continuation group received the first prescription of analgesics in month 1 of the pre-observation period; there was no follow-up whether analgesics were continued over the entire 6-month interval prior to the observation period. The Starter group did not use any analgesics during the 6-month interval prior to the observation period.