Acetaminophen Linked to Slight Decline in Renal Function

"Lifetime use of aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) did not cause a decline in renal function, but acetaminophen slightly increased risk, according to the results of an analysis from the Nurses' Health Study published in the July 26 issue of the Archives of Internal Medicine."

Have I gotten it all wrong? I thought NSAIDs (others) were known to cause Renal impairment