Table 3.

Univariate analysis for factors from the questionnaire

	Positive rate
Item	Control	Myelopathy	OR	95% CI	p value
Q1-1	2.08	11.29	5.98	0.71 - 50.39	0.135
Q1-2	18.75	22.58	1.26	0.50 - 3.23	0.646
Q1-3	14.58	36.07	3.30	1.27 - 8.60	0.016 *
Q1-4	8.33	16.67	2.20	0.64 - 7.51	0.255
Q2-1	14.58	32.26	2.79	1.07 - 7.30	0.044 *
Q2-2	6.25	11.29	1.91	0.47 - 7.81	0.509
Q2-3	14.58	4.84	0.30	0.073 - 1.22	0.10
Q3-1	2.08	9.68	5.04	0.59 - 43.3	0.108
Q3-2	12.50	44.83	5.69	2.09 - 19.46	< 0.001 *
Q3-3	17.02	80.65	20.31	7.57 - 54.54	< 0.001 *
Q3-4	28.26	74.19	7.30	3.10 - 17.21	< 0.001 *
Q3-5	15.22	74.19	16.02	5.98 - 42.91	< 0.001 *
Q4-1	10.64	38.71	5.31	18.40 - 15.29	0.001 *
Q4-2	61.70	73.77	1.75	0.77 - 3.96	0.213
Q4-3	23.91	55.74	4.01	1.72 - 9.33	0.001 *
Q4-4	10.64	54.84	10.20	3.56 - 29.25	< 0.001 *
Q5	51.02	89.83	8.48	3.08 - 23.36	< 0.001 *
Q6	2.08	32.76	22.90	2.93 - 178.79	< 0.001 *
Q7	66.67	98.31	29.00	3.68 - 228.87	< 0.001 *
Q8	20.83	79.66	14.88	5.80 - 38.172	< 0.001 *

*p < 0.05 and OR ≥ 2, OR: odds ratio, CI: confidence interval