Research Article
Development and Validation of a Novel Nomogram to Predict the Risk of Intervertebral Disc Degeneration
Table 2
Univariate logistic regression analysis of the training set.
| | Variables | IVDD () | Non-IVDD () | | value |
| | Age (year) | | | | | | ≤30 | 20 (21.74) | 51 (40.80) | -3.548 | <0.001 | | >30 and ≤60 | 37 (40.22) | 45 (36.00) | 2.147 | 0.032 | | >60 | 35 (38.04) | 29 (23.20) | 3.086 | 0.002 | | Sex | | | | | | Male | 49 (53.26) | 66 (52.80) | -1.579 | 0.114 | | Female | 43 (46.74) | 59 (47.20) | -0.067 | 0.946 | | Smoking | | | | | | No | 44 (47.83) | 61 (48.80) | -1.931 | 0.054 | | Yes | 48 (52.17) | 64 (51.20) | 0.442 | 0.659 | | Drinking | | | | | | No | 52 (56.52) | 60 (48.00) | -1.265 | 0.206 | | Yes | 40 (43.48) | 65 (52.00) | -0.630 | 0.529 | | BMI | | | | | | <18.5 | 17 (18.48) | 19 (15.20) | -0.333 | 0.739 | | ≥18.5 and <24 | 23 (25.00) | 40 (32.00) | -1.042 | 0.297 | | ≥24 and <28 | 33 (35.87) | 42 (33.60) | -0.319 | 0.749 | | ≥28 | 19 (20.65) | 24 (19.20) | -0.270 | 0.787 | | Hypertension | | | | | | No | 48 (52.17) | 100 (80.00) | -4.18 | <0.001 | | Mild | 9 (9.78) | 15 (12.00) | 0.489 | 0.625 | | Moderate | 12 (13.04) | 6 (4.80) | 2.693 | 0.007 | | Severe | 23 (25.00) | 4 (3.20) | 4.360 | <0.001 | | Diabetes | | | | | | No | 55 (59.78) | 107 (85.60) | -4.011 | <0.001 | | Yes | 37 (40.22) | 18 (14.40) | 4.177 | <0.001 | | Gout | | | | | | No | 71 (77.17) | 101 (80.80) | -2.276 | 0.023 | | Yes | 21 (22.83) | 24 (19.20) | 0.650 | 0.515 | | Marital status | | | | | | No | 47 (51.09) | 64 (51.20) | -1.607 | 0.108 | | Yes | 45 (48.91) | 61 (48.80) | 0.016 | 0.987 | | Working posture | | | | | | Immobilized | 75 (81.52) | 63 (50.40) | 1.020 | 0.308 | | Mobilized | 17 (18.48) | 62 (49.60) | -4.549 | <0.001 | | Exercising hours/week | | ≤0.5 | 42 (45.65) | 13 (10.40) | 3.695 | <0.001 | | >0.5 and ≤1.5 | 36 (39.13) | 22 (17.60) | -1.631 | 0.103 | | >1.5 and ≤3 | 9 (9.78) | 40 (32.00) | -5.475 | <0.001 | | >3 | 5 (5.43) | 50 (40.00) | -6.137 | <0.001 | | Education level | | High school | 31 (33.7) | 51 (40.80) | -2.186 | 0.029 | | Bachelor degree | 46 (50.00) | 53 (42.40) | 1.171 | 0.242 | | Graduate degree | 15 (16.30) | 21 (16.80) | 0.396 | 0.692 | | Modic changes | | No | 67 (72.83) | 86 (68.80) | -1.532 | 0.126 | | Yes | 25 (27.17) | 39 (31.20) | -0.642 | 0.521 | | Osteophytes | | | | | | No | 64 (69.57) | 88 (70.40) | -1.938 | 0.053 | | Yes | 28 (30.43) | 37 (29.60) | 0.133 | 0.895 | | Ca2+ | | | | | | Normal | 64 (69.57) | 89 (71.20) | -2.012 | 0.044 | | Low | 14 (15.22) | 22 (17.60) | -0.322 | 0.747 | | High | 14 (15.22) | 14 (11.20) | 0.800 | 0.424 | | Hb | | | | | | Normal | 73 (79.35) | 98 (78.40) | -1.905 | 0.057 | | Low | 14 (15.22) | 19 (15.20) | -0.028 | 0.977 | | High | 5 (5.43) | 8 (6.40) | -0.297 | 0.766 | | Lumbar puncture | | | | | | No | 75 (81.52) | 91 (72.80) | -1.240 | 0.215 | | Yes | 17 (18.48) | 34 (27.20) | -1.490 | 0.136 |
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