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Table 1 Demographic data and clinical characteristics (n = 295)

From: Long-term outcomes of long level posterolateral fusion in lumbar degenerative disease: comparison of long level fusion versus short level fusion: a case control study

Characteristics Group 1 Group 2 p-value
Mean age and distribution 61.8 years (46 ~ 72 years) 70.6 years (58 ~ 82 years) 0.021
Sex ratio (F/M) 115/67 74/39 0.792
Mean follow-up period 14.7 years 12.8 years 0.211
Fusion surgery Segment Patients Segment Patients  
1 78 3 65  
2 104 4 33  
   5 10  
   ≥6 5