Development and Validation of a Novel Nomogram to Predict the Risk of Intervertebral Disc Degeneration

Table 3

Multivariable logistic regression analysis of the training group.

Intercept and variable		Prediction model
		OR (95% CI)	value
Intercept	-0.157	0.855 (0.201-3.555)	0.829
Age
≤30
>30 and ≤60	0.876	2.402 (0.878-6.843)	0.092
>60	1.029	2.798 (0.953-8.656)	0.065
Sex
Male
Female	0.873	2.394 (0.971-6.231)	0.064
Smoking
No
Yes	-0.276	0.759 (0.296-1.887)	0.556
Drinking
No
Yes	-0.448	0.639 (0.243-1.627)	0.351
Hypertension
No
Mild	1.111	3.038 (0.772-12.407)	0.113
Moderate	1.842	6.309 (1.466-32.023)	0.018
Severe	3.587	36.113 (5.765-346.302)	<0.001
Diabetes
No
Yes	1.085	2.960 (1.045-8.918)	0.046
Gout
No
Yes	0.924	2.520 (0.902-7.395)	0.083
Working posture
Immobilized
Mobilized	-1.553	0.212 (0.080-0.517)	<0.001
Exercising hours/week
≤0.5
>0.5 and ≤1.5	-0.742	0.476 (0.160-1.354)	0.170
>1.5 and ≤3	-3.263	0.038 (0.009-0.134)	<0.001
>3	-4.305	0.013 (0.002-0.058)	<0.001
Education level
High school
Bachelor degree	0.434	1.543 (0.565-4.315)	0.399
Graduate degree	0.184	1.201 (0.394-3.669)	0.745
Osteophytes
No
Yes	-0.513	0.598 (0.229-1.517)	0.284
Ca2+
Normal
Low	-0.032	0.968 (0.275-3.354)	0.959
High	0.715	2.044 (0.596-7.368)	0.260
Hb
Normal
Low	-0.084	0.919 (0.290-2.816)	0.884
High	-0.340	0.711 (0.108-4.291)	0.713
Lumbar puncture
No
Yes	-0.078	0.925 (0.332-2.567)	0.880