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A community-based survey found 28.8% of men and 26.6% of women reported feeling pain at sampled times. The average pain rate increased with age.
Krueger A, Stone A. Assessment of Pain: A community-based diary survey in the USA. Lancet. 2008; 371(9623): 1519-25. http://www.thelancet.com/journals/lancet/article/PIIS0140-6736%2808%2960656-X/fulltext#article_upsell