Table 3. Logistic regression analysis to evaluate predictive variables of depression.

				95% CI for OR
Predictive variables		P	OR	Lower	Upper
Age at time of SCI		.389	0.977	0.928	1.030
Level of injury	Tetraplegia/paraplegia	.007	3.322	1.394	7.920
Gender	Women/men (men are reference level)	.019	3.097	1.206	7.953
Income	Self-supporting (reference level)	.385
	By family	.658	1.233	0.488	3.120
	By governmental or nongovernmental organization	.172	2.588	0.661	10.142
Education level	0-8 years (reference level)	.020
	9-12 years	.527	0.765	0.334	1.753
	>12 years	.006	0.155	0.041	0.587
Constant		.029	0.100

Note: -2 log likelihood = 158.683. R² = 0.224. CI = confidence interval; OR = odds ratio; SCI = spinal cord injury.