{"nct_id":"NCT00635349","title":"A Comparative Study of Tramadol Hydrochloride Plus Acetaminophen Tablets Maintenance Versus Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) Maintenance in Participants With Knee Osteoarthritis","status":"COMPLETED","status_verified_date":"2013-07","start_date":"2007-05","start_date_type":null,"primary_completion_date":"2009-04","primary_completion_date_type":"ACTUAL","completion_date":"2009-04","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["JNJ"]}