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Table 1 Results of previous meta-analysis

From: Cervical disc arthroplasty (CDA) versus anterior cervical discectomy and fusion (ACDF) in symptomatic cervical degenerative disc diseases (CDDDs): an updated meta-analysis of prospective randomized controlled trials (RCTs)

  1. Red means favoring CDA; Yellow means no difference; Grey means not reporting; and blue means favoring ACDF
  2. NDI neck disability index, VAS Visual Analogue Score, ASD adjacent segment disease