Table 3

Rank order correlation statistics

Outcome	THA			TKA

	p value	rs	t	p value	rs	t
Duration of surgery, min	0.004	0.145	2.690	0.44	0.009	0.140

SF-12 physical	0.25	0.076	0.680	0.13	0.067	1.140

SF-12 mental	0.07	0.099	1.830	0.27	0.035	0.600

WOMAC	0.41	0.012	0.230	0.49	0.002	0.890

Acetabular angle	0.26	0.040	0.650

Femoral angle	0.23	0.040	0.740

Tibial angle				0.19	0.051	0.870

Intraoperative fracture	0.05	0.090	1.640	0.35	0.020	0.310

Superficial infection	0.22	0.040	0.760	0.23	0.040	0.730

Dislocation	0.29	0.030	0.550

SF-12 = Short Form-12 health survey; (34) THA = total hip arthroplasty; TKA = total knee arthroplasty; WOMAC = Western Ontario and McMaster Universities Osteoarthritis Index. (35)