Figures 3A and B.

Crude reported use of nonsteroidal anti-inflammatory drugs in the US population by chronic kidney disease status, National Health and Nutrition Examination Survey, 1999–2004.

CKD=chronic kidney disease; NSAID=nonsteroidal anti-inflammatory drug; OTC = over-the-counter; Rx=prescription.

Note: P >.05 across CKD categories by χ², except where indicated. OTC drugs included ibuprofen and naproxen; Rx-only drugs included sulindac, piroxicam, indomethacin, tolmetin, diclofenac, celecoxib, and rofecoxib. Prescription NSAIDs included ibuprofen, naproxen, sulindac, piroxicam, indomethacin, tolmetin, diclofenac, nimesulide, meclofenamate, etodolac, ketorolac, flurbiprofen, and ketoprofen.

^a Unreliable estimates because of small sample sizes.