Figure 1From: An economic model of long-term use of celecoxib in patients with osteoarthritis Schematic representation of the study model. nsNSAID, nonselective nonsteroidal anti-inflammatory drug; NUD, nonulcer dyspepsia-like composite; OA, osteoarthritis; PPI, proton pump inhibitor; POB, perforation, obstruction, bleeding ulcer; UGI, upper gastrointestinal.Back to article page