. 2014 Dec 26;3(1):2325967114563664. doi: 10.1177/2325967114563664

TABLE 4.

Observed and Age-Adjusted Rates of ACL Reconstruction With Use of the US Population in 2000 as the Control^a

Outpatient Age, y	NSAS 1994		NSAS 1995		NSAS 1996		NSAS 2006		Percentage Change Adjusted Rate (2006 vs 1994)
Outpatient Age, y	Observed^b	Age-Adjusted	Observed^b	Age-Adjusted	Observed^b	Age-Adjusted	Observed^b	Age-Adjusted	Percentage Change Adjusted Rate (2006 vs 1994)
0-14	8.55	1.84	17.52	3.76	15.32	3.29	87.8	18.85	924
15-34	346.53	95.02	580.56	159.2	623.29	170.92	1073.2	294.29	210
35-54	121.86	36.24	198.94	59.17	267.93	79.69	476.6	141.76	291
≥55	11.03	2.36	7.64	1.63	37.89	8.09	42.8	9.15	288

Inpatient Age, y	NHDS 1990		NHDS 1994		NHDS 1996		NHDS 2006		Percentage Change Adjusted Rate (2006 vs 1994)
Inpatient Age, y	Observed^b	Age-Adjusted	Observed^b	Age-Adjusted	Observed^b	Age-Adjusted	Observed^b	Age-Adjusted	Percentage Change Adjusted Rate (2006 vs 1994)
0-14	10.6	2.28	21.76	4.67	12.65	2.72	12.84	2.76	−69
15-34	483.4	132.56	489.79	134.31	341.93	93.76	54.55	14.96	−798
35-54	91.02	27.07	131.17	39.02	91.65	27.26	18.57	5.52	−607
≥55	9.63	2.06	12.78	2.73	21.53	4.59	10.11	2.16	−26

^aNHDS, National Hospital Discharge Survey; NSAS, National Survey of Ambulatory Surgery; US, United States.

^bRate per 100,000 capita.