Table 3

Prediction model of postoperative pain and sng on physical and mental health-related quality of life (n=208)

	Physical component score			Mental component score
Variables	B	SE	P value	B	SE	P value
Back pain	0.22	0.43	0.62	−0.24	0.38	0.54
Leg pain	−0.67	0.37	0.08	0.04	0.33	0.91
Back sng	−0.15	0.37	0.69	−0.67	0.32	0.04
Leg sng	0.26	0.35	0.46	−0.09	0.31	0.76
Controlled for
Age	−0.24	0.07	0.70	0.08	0.06	0.21
BMI	−0.20	0.15	0.19	−0.18	0.13	0.18
mCCI	−0.56	0.48	0.25	−0.09	0.42	0.83
Male sex	0.79	1.23	0.52	0.08	1.11	0.94
Duration of symptoms	0.11	0.19	0.59	0.11	0.17	0.51
ODI score	−0.41	0.05	<0.001	−0.17	0.05	<0.001
Analgesic use	−0.96	0.50	0.59	0.58	1.52	0.70
Preoperative PCS/MCS	−0.03	0.08	0.75	0.21	0.06	<0.001
Spondylolisthesis	−2.34	2.24	0.30	−1.70	2.01	0.40
Disc herniation	0.61	2.19	0.78	0.59	1.93	0.76
Spondylotic stenosis	2.75	1.66	0.10	1.60	1.45	0.27

Quality of life was measured by RAND 36-item Short Form Health Survey.
Adjusted R²=0.53 for physical component score and 0.35 for mental component score.
BMI, body mass index; mCCI, Modified Charlson Comorbidity Index; MCS, mental component score; ODI, Oswestry Disability Index; PCS, physical component summary.