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Mean number of emergency room visits and hospitalizations in the past 6 months, according to pain, age group, and income level.
Notes: Pairwise tests between pain and no pain were significant for ER visits for ages <35, 35–44, 45–54, and 65–74; for hospitalizations, for ages <35, 35–44, 45–54, 55–64, and 65–74. *p<0.05.
Abbreviation: ER, emergency room.
