Note: NSAID is a nonsteroidal anti-inflammatory drug. Occasional users used NSAIDs less than 75 percent of the time and regular users used them at least 75 percent of the time.
Source: Smalley WE, Griffin MR, Fought RL, et al. Excess costs from gastrointestinal dis-ease associated with nonsteroidal anti-inflammatory drugs. J Gen Intern Med1996;11(8):461-9.