Arthritis Research & Therapy

Table 1 Estimated number of gout visits in the US from 1993 to 2009 by age and gender

From: Trends in physician diagnosed gout and gout therapies in the US: results from the national ambulatory health care surveys 1993 to 2009

		Men					Women
Age, years	1993 to 1996	1997 to 2000	2001 to 2005	2006 to 2009	P-value^a	1993 to 1996	1997 to 2000	2001 to 2005	2006 to 2009	P-value^a
20 to 39	704,285	1,039,594	769,990	1,591,411	0.09	136,926	199,082	105,708	280,295	0.62
40 to 59	3,658,756	4,903,678	5,746,758	7,944,502	0.07	1,180,143	965,395	2,037,772	1,409,484	0.81
60 to 79	5,590,948	5,836,312	10,280,899	14,921,770	<0.001	2,192,226	2,456,175	3,604,061	5,349,247	0.01
> = 80	800,007	1,585,809	2,617,818	3,721,661	0.006	1,172,668	851,594	1,784,431	3,005,855	0.06
Overall	10,753,996	13,365,393	19,415,465	28,179,344		4,681,963	4,472,246	7,531,972	10,044,881

^aP-values are for trend: the test was performed using bivariate logistic regression models with calendar year as a continuous variable.

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