Table 5.

Twelve-week logistic regression analysis.

	Modified Harris hip score		HOOS JR.		PROMIS-SF pain interference		PROMIS-SF physical function
	Mean Δ	P value	Mean Δ	P value	Mean Δ	P value	Mean Δ	P value
Gender
Male	51.5	.24	57.3	.003	21.1	.01	21.3	.30
Female	59.8		81.8		26.1		24.4
Agea	P = .34, r-square = 0.05		P = .35, r-square = 0.03		P = .43, r-square = 0.02		P = .22, r-square = 0.06
Pain duration
Pain for 1-5 y	53.2	.48	72.8	.72	23.3	.56	22.6	.29
Pain for >5 y	58.0		68.4		20.3		23.3
Preoperative diagnosis
Osteoarthritis	59.5	.46	72.5	.53	22.5	.28	26.0	.18
Osteonecrosis	54.8	.93	57.7	.70	15.8	.19	23.0	.23
Developmental dysplasia of the hip	50.5	.56	73.5	.85	20.5	.49	14.1	.17
Posttraumatic osteoarthritis	55.1	.94	69.3	.51	16.9	.24	12.9	.07
Rheumatoid arthritis	58.2	.75	83.4	.27	37.3	.03	26.9	.25
Unilateral vs bilateral
Unilateral THA	50.9	.24	72.0	.46	22.1	.24	22.6	.75
Bilateral simultaneous	60.3		65.2		20.1		24.5

^aBivariate analysis. Bold values indicate statistical significance.