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Table 1 Demographic data in cohorts I and II

From: Clinical and radiological outcome of minimally invasive posterior lumbar interbody fusion in primary versus revision surgery

  Cohort I Cohort II
Age (years) 50.5 (33–76) 48.8 (37–76)
Gender (F:M) 1:1.9 1:1.9
Length (cm) 173 (152–190) 175 (156–195)
Weight (kg) 82.2 (57–120) 84.1 (57–128)
ASA 1.46 (1–2) 1.68 (1–3)
Follow-up (years) 5.1 (2–10) 5.1 (2–10)
Preoperative pain (years) 7.64 (1–30) 8.79 (2–25)
Smoking (%) 37 50
Previous operations of the lumbar spine 2.0 (1–15) 0.04 (0–1)