Table 3.
Grading of degenerative disc findings on MR images at the surgical level in patients aged 40 years and over
| Characteristics | Total | Grade 2 or 3 | Grade 4 | Odds ratioa | P |
|---|---|---|---|---|---|
| BMI | |||||
| <25 (%) | 13 (27.7%) | 8 (61.5%) | 5 (38.5%) | 0.89 | >0.999 |
| ≥25 (%) | 34 (72.3%) | 20 (58.8%) | 14 (41.2%) | ||
| Occupation | |||||
| Lifting heavy loads (%) | 17 (36.2%) | 9 (53.9%) | 8 (47.1%) | 1.54 | 0.486 |
| Desk workers (%) | 30 (63.8%) | 19 (63.3%) | 11 (36.7%) | ||
| Smoking | |||||
| Smokers (%) | 23 (48.9%) | 15 (65.2%) | 8 (34.8%) | 0.63 | 0.440 |
| Non-smokers (%) | 24 (51.1%) | 13 (54.2%) | 11 (45.8%) | ||
| Trp2 | |||||
| Trp2(+), (%) | 9 (19.1%) | 5 (55.6%) | 4 (44.4%) | 1.23 | >0.999 |
| Trp2(−), (%) | 38 (80.9%) | 23 (60.5%) | 15 (39.5%) |
aCalculated for 2×2 table for each risk factor (exposure) vs grading of degenerative disc findings, alpha=0.05