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Table 3 Meta-regression of potential effect of follow-up and mean age on the radiographic and clinical indexes

From: Differences in radiographic and clinical outcomes of oblique lateral interbody fusion and lateral lumbar interbody fusion for degenerative lumbar disease: a meta-analysis

 Follow-upMean age
OLIFLLIFOLIFLLIF
Coefficient (95% CI)P > tCoefficient (95% CI)P > tCoefficient (95% CI)P > tCoefficient (95% CI)P > t
Disc height0.01(−0.79 to 0.09)0.88−0.07(−0.31 to 0.16)0.44−0.09(−0.32 to 0.15)0.360.11(−0.67 to 0.89)0.73
Visual analogue scale0.01(− 0.23 to 0.24)0.94−0.01(− 0.05 to 0.04)0.840.36(− 0.05 to 0.78)0.08− 0.04(− 0.17 to 0.09)0.54
Oswestry Disability Index−0.08(− 0.28 to 0.12)0.380.02(− 0.02 to 0.06)0.340.46 (0.18 to 0.74)0.01*−0.06(− 0.15 to 0.02)0.14
  1. OLIF oblique lateral interbody fusion; LLIF lateral lumbar interbody fusion; *P < 0.05 is considered as the factor that contributes to the heterogeneity of effect. If coefficient interval goes across both negative and positive values, it means that no evidence supports that the factor contributes significantly to the heterogeneity of effect