Research Article
Factors for Predicting Favorable Outcome of Percutaneous Epidural Adhesiolysis for Lumbar Disc Herniation
Table 3
Univariate and multivariate analyses of variables that predict a substantial response 1 year after percutaneous epidural adhesiolysis.
| | | Univariate | Multivariate | OR | 95% CI | | OR | 95% CI | |
| Gender | Male | 1 | | | | | | Female | 0.736 | 0.469–1.145 | 0.178 | | | |
| Age | | 0.991 | 0.975–1.006 | 0.237 | | | |
| Height | | 1.010 | 0.984–1.037 | 0.466 | | | |
| Weight | | 1.003 | 0.983–1.024 | 0.767 | | | |
| BMI | | 0.985 | 0.904–1.073 | 0.727 | | | |
| Type of HIVD | Protrusion | 1 | | | | | | Extrusion | 1.322 | 0.812–2.160 | 0.262 | 1.409 | 0.852–2.345 | 0.183 | Sequestration | 0.867 | 0.430–1.814 | 0.696 | 0.982 | 0.474–2.110 | 0.962 | Foraminal | 0.228 | 0.081–0.603 | 0.004 | 0.295 | 0.101–0.809 | 0.020 |
| Concurrent oral analgesics | Yes | 1 | | | | | | No | 2.333 | 0.393–44.329 | 0.435 | | | |
| Concurrent physical therapy | Yes | 1 | | | | | | No | 1.428 | 0.925–2.211 | 0.109 | | | |
| Previous epidural block | Yes | 1 | | | | | | No | 1.275 | 0.811–1.995 | 0.289 | | | |
| Previous blocks other than epidural | Yes | 1 | | | | | | No | 2.091 | 0.731–5.752 | 0.153 | | | |
| Number of levels | Single | | | | | | | Two | 1.029 | 0.642–1.667 | 0.908 | | | | Three | 1.385 | 0.567–3.898 | 0.501 | | | |
| Location of lesion | Left | 1 | | | | | | Right | 1.106 | 0.703–1.743 | 0.664 | | | | Both | 1.177 | 0.534–2.805 | 0.697 | | | |
| HIZ at MRI | Present | 1 | | | | | | Negative | 0.469 | 0.288–0.748 | 0.002 | 0.507 | 0.305–0.827 | 0.007 |
| Immediate complications | Yes | 1 | | | | | | No | 0.768 | 0.275–1.860 | 0.582 | | | |
| Baseline NRS score | | 0.833 | 0.657–1.053 | 0.126 | | | |
| 1-month NRS score | | 0.735 | 0.600–0.894 | 0.002 | 0.789 | 0.640–0.969 | 0.025 |
| Oral analgesic consumption after 1 month | No change | 1 | | | | | | Decreased | 0.884 | 0.485–1.669 | 0.693 | | | | Increased | 0.375 | 0.015–9.559 | 0.490 | | | |
| Substantial response after 1 month | Yes | 1 | | | | | | No | 0.681 | 0.434–1.074 | 0.096 | | | |
| Repeated procedure during follow-up | Yes | 1 | | | | | | No | 0.944 | 0.257–2.827 | 0.923 | | | |
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BMI: body mass index, CI: confidence intervals, HIVD: herniated intervertebral disc, HIZ: high-intensity zone, MRI: magnetic resonance image, NRS: numerical rating scale, OR: odds ratio.
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