Table 3.

Prevalence of comorbidities among discharges undergoing total hip arthroplasty from 1990–2004

	1990–1994		1995–1999		2000–2004		1990–2004
Time period	N	%	N	%	N	%	N	%
Hypertensiona	157,120	26.03	271,410	37.08	430,515	45.17	859,045	37.54
Diabetes mellitusa	41,354	6.85	59,594	8.14	105,337	11.05	206,285	9.01
Hypercholesteremiaa	10,393	1.72	26,570	3.63	61,871	6.49	98,834	4.32
Obesitya	13,399	2.22	26,234	3.58	47,833	5.02	87,466	3.82
Cerebrovascular diseasea	6,306	1.05	5,318	0.73	6,362	0.67	17,986	0.79
Peripheral vascular diseasea	7,122	1.18	7,627	1.04	7,954	0.84	22,703	0.99
Pulmonary Diseasea	50,676	8.40	73,123	9.99	96,482	10.12	220,281	9.63
Renal diseasea (POI 1 and 3 and POI 2 and 3 only)	4,686	0.78	5,735	0.78	10,933	1.15	21,354	0.93
Coronary artery diseasea	45,641	7.56	69,302	9.47	107,542	11.28	222,485	9.72

^a Significant difference between all time periods or between time periods indicated in parenthesis