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Table 1 The general characteristic of the included studies

From: Systematic review and meta-analysis of risk factor for postoperative delirium following spinal surgery

Reference Country Study design Study setting Sample size Age (year) Sex ratio (M:F) Criteria for delirium Screening frequency (h) Study quality score
Adogwa et al. [9] USA RCS Correction of adult degenerative scoliosis 82 71.8 NS CAM n.s 7
Brown et al. [10] USA Cohort Lumbar spine surgery, posterior cervical spine surgery, or anterior cervical spine 89 74 47/42 CAM 24 h 9
Elsamadicy et al. [11] USA   Elective spine surgery     NS   7
Fineberg et al. [12] USA RCS Lumbar spine 578,457    ICD-9-CM NS 6
Gao et al. [13] China RCS Cervical, thoracic, lumbar, and sacral spine 549 48.2   DOS, DSM-IV 24 h 6
Jiang et al. [14] China RCS Fusion, decompressive laminectomy and discectomy of the lumbar spine, and anterior cervical discectomy and fusion, laminoplasty, and foraminotomy of the cervical spine 451 65.1 226/225 NS NS 6
Kawaguchi et al. [15] Japan RCS Cervical spine, cervico-thoracic spine in the thoracic spine, in the thoraco-lumbar spine, in the lumbar spine, and cervical and lumbar spine 341 59.2 186/155 CAM NS 6
Kobayashi et al. [16] Japan RCS Cervical, thoracic, and lumbar spine 262 82.7 122/140 CONFUCIUS stepped wedge protocol NS 8
Lee et al. [17] Korea RCS Anterior fusion and posterolateral fusion 81 73.5 28/53 DSM-IV, CAM NS 8
Seo et al. [18] Korea RCS Operation, decompressive laminectomy and discectomy of the lumbar spine, anterior cervical discectomy and fusion, laminoplasty and foraminotomy of the cervical spine 70 70.1 32/38 DSM-5 NS 9
Ushida et al. [19] Japan RCS Cervical myelopathy 81 NS 41/41 NS NS 8
Li et al. [20] China RCS Spinal surgery 116 75.3 62/54 CAM-ICU 24 h 6
Adogwa et al. [21] USA RCS Spinal deformity surgery 82 74.7 64/18 CAM-ICU NS 8
  1. RCS retrospective controlled study, CAM-ICU Confusion Assessment Method for the Intensive Care Unit, CAM Confusion Assessment Method, DSM-5 Diagnostic and Statistical Manual of Mental Disorders-5