From: Learning curve of trans-sacral epiduroscopic laser decompression in herniated lumbar disc disease
 | Early group (n = 20) | Late group (n = 62) | OR or difference | 95% CI | P value |
---|---|---|---|---|---|
VAS for low back pain | Â | Â | Â | Â | Â |
Preoperative | 5.60 ± 1.82 | 5.29 ± 1.68 | 0.31 ± 0.546 | − 0.791–1.422 | 0.568†|
1 week | 3.45 ± 1.79 | 3.00 ± 1.00 | 0.45 ± 0.45 | − 0.462–1.366 | 0.324†|
1 month | 2.71 ± 1.40 | 2.47 ± 1.74 | 0.24 ± 0.54 | − 0.878–1.342 | 0.667†|
6 months | 2.89 ± 1.69 | 2.80 ± 1.32 | 0.09 ± 0.62 | − 1.194–1.371 | 0.887†|
VAS for leg pain | Â | Â | Â | Â | Â |
Preoperative | 6.15 ± 1.63 | 6.05 ± 1.75 | 0.10 ± 0.53 | − 0.977–1.174 | 0.847†|
1 week | 4.00 ± 1.56 | 3.81 ± 2.09 | 0.019 ± 0.58 | − 0.983–1.367 | 0.743†|
1 month | 3.53 ± 2.15 | 3.18 ± 2.60 | 0.35 ± 0.82 | − 1.320–2.022 | 0.670†|
6 months | 3.56 ± 1.67 | 3.60 ± 2.35 | 0.04 ± 0.90 | − 1.917–1.821 | 0.961†|
Odom’s criteria |  |  |  |  |  |
1 week, Excellent/good/fair/poor | 2/11/6/1 | 8/29/24/1 |  |  | 0.577‡ |
1 month, Excellent/good/fair/poor | 3/8/9/0 | 17/20/25/0 |  |  | 0.383‡ |
6 months, Excellent/good/fair/poor | 2/9/7/2 | 14/23/23/2 |  |  | 0.231‡ |