Table 2.

Subcutaneous tissue depths and surgical site complication within 60 days postoperatively in primary THA.

Variable	Skin complication (abrasion or infection)	N	Mean	Standard error	Standard deviation	Median	Minimum	Maximum	P-value
BMI	No	262	29.86	0.32	29.47	5.12	18.99	40.75	.0021
	Yes	18	33.69	0.84	34.10	3.57	25.07	38.28
Procedure duration (min)	No	222	72.93	0.88	71.00	13.12	51.00	138.00	.8828
	Yes	16	72.44	2.57	71.50	10.26	55.00	91.00
Subcutaneous tissue depths (cm)
Proximal	No	262	1.77	0.05	1.70	0.89	0.30	7.50	.6498
	Yes	18	1.68	0.17	1.65	0.72	0.90	3.80
Middle	No	262	2.08	0.06	2.00	0.93	0.20	7.00	.8079
	Yes	18	2.02	0.18	2.00	0.78	1.00	4.30
Distal	No	262	2.17	0.06	2.00	1.03	0.40	9.00	.2757
	Yes	18	1.89	0.19	1.90	0.81	0.80	4.10
Average	No	262	2.01	0.05	1.87	0.88	0.30	6.83	.5044
	Yes	18	1.86	0.18	1.92	0.75	0.90	4.07