Neuropathic Pain Was Associated with Central Sensitivity Syndrome in Patients with Preoperative Lumbar Spinal Stenosis Using the painDETECT and Central Sensitization Inventory Questionnaires: A Cross-Sectional Study

Table 3

A matrix of the correlations.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21
(1) Age	—
(2) Gender	0.174	—
(3) Height	−0.403	−0.717	—
(4) Weight	−0.393	−0.479	0.664	—
(5) BMI	−0.193	−0.028	0.031	0.732	—
(6) Duration of LSS symptoms	0.130	0.309	−0.227	−0.159	−0.020	—
(7) Classification of pain by course	0.089	0.218	−0.134	−0.090	−0.007	0.777	—
(8) Classification of LSS by site of symptom appearance	0.264	−0.069	0.000	−0.034	−0.079	0.154	0.272	—
(9) Clinical phenotype of LSS	−0.090	0.060	−0.040	−0.047	−0.034	−0.181	−0.310	−0.511	—
(10) Number of spinal stenosis	0.135	0.038	−0.118	−0.195	−0.162	0.166	0.177	0.253	−0.105	—
(11) Grade of spinal stenosis according to Schizas	−0.009	−0.064	0.015	−0.087	−0.122	0.009	0.140	0.248	−0.212∗	0.366	—
(12) Number of conservative treatment	−0.105	0.068	−0.051	−0.001	0.021	0.137	0.178	0.065	−0.104	0.157	0.147	—
(13) NRS for LBP	0.114	−0.011	0.029	0.003	0.001	0.218	0.191	0.044	−0.124	0.021	0.008	0.260	—
(14) NRS for leg pain	0.068	−0.108	0.084	−0.056	−0.17	−0.021	−0.013	0.052	−0.039	0.145	0.053	0.242	0.464	—
(15) NRS for leg numbness	0.045	−0.187	0.193	0.148	0.029	0.014	0.0007	0.091	−0.081	0.041	0.071	0.183	0.387	0.662	—
(16) painDETECT	−0.078	−0.075	0.117	0.037	−0.035	0.133	0.007	0.068	0.032	0.126	0.006	0.229	0.341	0.428	0.429	—
(17) CSI	0.086	0.042	−0.071	−0.081	−0.04	0.186∗	0.057	0.172	0.042	0.030	−0.167	0.281	0.444	0.327	0.293	0.550	—
(18) ZCQ	0.099	−0.141	0.079	−0.048	−0.161	−0.030	−0.099	0.272	−0.085	0.061	0.128	0.171	0.379	0.534	0.463	0.469	0.349	—
(19) ZCQ for symptom severity	0.086	−0.194	0.170	−0.000	−0.158	−0.070	−0.155	0.239	−0.040	0.062	0.180	0.171	0.336	0.504	0.492	0.523∗∗∗	0.307	0.877	—
(20) ZCQ for physical function	0.130	0.007	−0.100	−0.141	−0.162	0.051	0.031	0.224	−0.059	0.107	0.050	0.149	0.319	0.420	0.268∗∗	0.308	0.305	0.802	0.453	—
(21) EQ-5D-5L	−0.126	0.089	0.028	0.091	0.122	−0.061	0.024	−0.100	0.065	−0.029	−0.084	−0.270	−0.451	−0.519	−0.344	−0.426	−0.461	−0.641	−0.472	−0.640	—

BMI: body mass index; NRS: Numerical Rating Scale; CSI: Central Sensitization Inventory; ZCQ: Zurich Claudication Questionnaire; EQ-5D-5L: EuroQol-5 dimensions-5 levels. ; ; .