Table 1 Pre- and perioperative data in patients with surgery for lumbar disc herniation (LDH) in relation to body mass index (BMI; g/cm2) class. Data are presented as means ± standard deviations or as proportions (%)
Normal weight BMI 18.5–24.9 | Overweight BMI 25.0–29.9 | Obese class I BMI 30.0–34.9 | Obese class II BMI 35.0–39.9 | Obese class III BMI ≥ 40.0 | |
|---|---|---|---|---|---|
n = 4156 | n = 4063 | n = 1384 | n = 317 | n = 59 | |
Age (years) | 42 ± 11 | 44 ± 10 | 45 ± 10 | 43 ± 10 | 41 ± 11 |
Men/Women | 45%/55% | 64%/36% | 56%/44% | 44%/56% | 42%/58% |
Smokers | 16% | 14% | 16% | 19% | 19% |
Numeric Rating Scale leg pain | 6.7 ± 2.4 | 6.7 ± 2.5 | 6.7 ± 2.4 | 7.0 ± 2.5 | 6.8 ± 2.2 |
Numeric Rating Scale back pain | 4.5 ± 2.9 | 4.7 ± 2.9 | 5.0 ± 2.9 | 5.6 ± 3.0 | 5.4 ± 2.7 |
Oswestry Disability Index | 47 ± 19 | 47 ± 18 | 50 ± 17 | 53 ± 19 | 51 ± 17 |
Acute Surgery | 10% | 10% | 10% | 13% | 9% |
Level of operation | |||||
- L3-L4 | 3% | 5% | 6% | 7% | 2% |
- L4-L5 | 38% | 45% | 47% | 49% | 55% |
- L5-S1 | 57% | 49% | 44% | 42% | 41% |
- Other | 1% | 1% | 3% | 2% | 2% |
Type of surgery | |||||
- Microdiscectomy (open) | 47% | 44% | 40% | 38% | 36% |
- Microdiscectomy (microscope) | 43% | 44% | 45% | 45% | 44% |
- Decompression (open) | 3% | 4% | 5% | 7% | 12% |
- Decompression (microscope) | 2% | 2% | 2% | 4% | 0% |
- Other & not specified | 5% | 6% | 6% | 6% | 8% |