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Table 4 Comparisons of incidence of ASD among different postoperative LDI groups

From: Relationship between postoperative lordosis distribution index and adjacent segment disease following L4-S1 posterior lumbar interbody fusion

 Total (n)Non-ASDASDP
Low LDI, n (%)1612 (75)4 (25).006
Moderate LDI, n (%)146140 (95.9)6 (4.1) 
Low LDI, n (%)1612 (75)4 (25).859
High LDI, n (%)3831 (81.6)7 (18.4) 
Moderate LDI, n (%)146140 (95.9)6 (4.1).007
High LDI, n (%)3831 (81.6)7 (18.4) 
  1. ASD adjacent segment disease, LDI lordosis distribution index