Table 1:

Results of multiple regression: model 1

	Coefficient	95% CI	P
Age	−0.36	−0.27–0.34	.816
Sex	−0.22	−0.27–3.42	.936
Number of vertebral bodies	3.41	0.81–6.00	.011
Cement leakage into adjacent disk	−0.86	−5.12–3.39	.685
Cement leakage except disk	1.52	−3.59–6.64	.553
Presence of malignancy	−3.91	−12.92–5.10	.388

Note:—CI indicates confidence interval. Dependent variables were difference between preprocedural and postprocedural Pao₂. Independent variables were age, sex, number of vertebral bodies, presence of cement leakage, and malignancy. Adjusted r², 0.296.