. 2008 Oct 31;33(5):1217–1222. doi: 10.1007/s00264-008-0682-0

Table 1.

Baseline patient characteristics in study sample (N = 335)

Variables		n	%
Patient attributes
Age^a (y)	59.82 ± 14.71
Gender	Male	190	56.72
	Female	145	43.28
Marital status	Married	304	90.75
	Other	31	9.25
Education level	Below elementary	123	36.72
	Elementary	117	34.92
	High school or above	95	28.36
Number of comorbidities^a	0.61 ± 0.46
Duration^a (mo)	40.31 ± 30.48
Previous arthroplasty	No	262	78.20
	Yes	73	21.80
Principal diagnosis	Avascular necrosis	126	37.61
	Osteoarthritis	175	52.24
	Other	34	10.15
Harris hip score: postoperative pain^a	18.15 ± 8.55
Harris hip score: preoperative physical function^a	22.31 ± 9.15
Hospital attributes
Physician	Surgeon A	192	57.31
	Surgeon B	143	42.69
Operating time^a (minutes)	140.48 ± 30.70
Cement type	Cementless	320	95.52
	Cemented	15	4.48
Prosthesis brand	Zimmer	97	28.95
	Corin	167	49.85
	Other	71	21.20
Anaesthesia type	General	178	53.13
	Spinal/epidural	157	46.87
Quality of care
Readmission within 30 days	No	329	98.21
	Yes	6	1.79
Average length of stay^a (days)	7.89 ± 2.29

^a Mean ± standard deviation