Table 3.
Pooling Results of the ED Group and the NED Group. The Results Were Shown as Follows: VAS Between PETD and FD, VAS Between PELD and FD and JOA Between PELD and FD.
| Outcomes | Trials | Participants | Mean difference (95%CI) | P valuea |
|---|---|---|---|---|
| PETD VS FD | ||||
| VAS after 1 day | 3 | 250 | −1.27 [−2.47 to −0.07] | .04 |
| VAS after 3 day | 2 | 160 | −1.56 [−4.29 to 1.18] | .26 |
| VAS after 3 month | 2 | 140 | −0.10 [−0.29 to 0.09] | .31 |
| VAS after 1 year | 3 | 226 | −0.14 [−0.34 to 0.06] | .17 |
| ODI after 1 month | 3 | 266 | −0.74 [−1.59 to 0.11] | .09 |
| ODI after 3 month | 3 | 246 | 0.03 [−0.22 to 0.28] | .81 |
| ODI after 6 month | 3 | 276 | −1.01 [−2.66 to 0.63] | .23 |
| ODI after 1 year | 5 | 412 | −0.42 [−0.98 to 0.13] | .13 |
| JOA | 4 | 332 | 0.11 [−0.38 to 0.60] | .65 |
Abbreviations: PETD, percutaneous endoscopic transforaminal discectomy; FD, fenestration discectomy; VAS, visual analog scale; ODI, Oswestry disability index; JOA, Japanese Orthopaedic Association back pain evaluation questionnaire.
a P value for heterogeneity between interventions calculated by using mixed-effects models.