Table 2.

Number of individuals (in thousands) with symptomatic and advanced symptomatic knee OA in the US

Age	Race / Ethnicity	Sex	2007–08			2011–12
			Population	Symptomatic Knee OA	Advanced Symptomatic Knee OA	Population	Symptomatic Knee OA	Advanced Symptomatic Knee OA
25-44	Hispanic	Female	7,190	140 (2%)	40 (1%)	7,790	190 (2%)	60 (1%)
45-64			3,930	300 (8%)	140 (4%)	4,750	490 (10%)	260 (5%)
65+			1,440	210 (15%)	130 (9%)	1,760	330 (19%)	220 (13%)
25-44		Male	7,810	110 (1%)	30 (0%)	8,450	150 (2%)	60 (1%)
45-64			3,790	230 (6%)	120 (3%)	4,650	300 (6%)	160 (4%)
65+			1,060	120 (11%)	80 (7%)	1,310	180 (14%)	130 (10%)
25-44	Non-Hispanic Black	Female	5,620	150 (3%)	50 (1%)	5,690	170 (3%)	60 (1%)
45-64			4,730	480 (10%)	250 (5%)	5,240	560 (11%)	300 (6%)
65+			1,980	380 (19%)	260 (13%)	2,210	440 (20%)	300 (14%)
25-44		Male	5,030	90 (2%)	40 (1%)	5,160	90 (2%)	40 (1%)
45-64			4,060	270 (7%)	150 (4%)	4,520	310 (7%)	170 (4%)
65+			1,270	180 (14%)	130 (10%)	1,450	190 (13%)	140 (9%)
25-44	Non-Hispanic Other Race	Female	3,040	70 (2%)	20 (1%)	3,320	60 (2%)	20 (1%)
45-64			2,200	220 (10%)	110 (5%)	2,550	190 (7%)	80 (3%)
65+			850	150 (18%)	100 (12%)	1,060	170 (16%)	110 (10%)
25-44		Male	2,770	50 (2%)	20 (1%)	3,000	50 (2%)	20 (1%)
45-64			1,900	130 (7%)	70 (4%)	2,200	130 (6%)	60 (3%)
65+			650	80 (13%)	60 (9%)	820	100 (13%)	70 (8%)
25-44	Non-Hispanic White	Female	25,310	610 (2%)	200 (1%)	24,590	550 (2%)	170 (1%)
45-64			29,080	2,580 (9%)	1,260 (4%)	29,970	2,720 (9%)	1,330 (4%)
65+			17,770	3,020 (17%)	1,950 (11%)	18,930	3,380 (18%)	2,220 (12%)
25-44		Male	25,520	450 (2%)	170 (1%)	24,940	420 (2%)	160 (1%)
45-64			28,260	1,880 (7%)	1,030 (4%)	29,110	2,050 (7%)	1,150 (4%)
65+			13,450	1,840 (14%)	1,300 (10%)	14,890	1,960 (13%)	1,360 (9%)
Total			198,600	13,750 (6.9%)	7,720 (3.9%)	207,710	15,170 (7.3%)	8,650 (4.2%)