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Table 3 Logistic regression analysis for postoperative ischemic events

From: Risk factors for postoperative ischemic complications in pediatric moyamoya disease

Characteristics Postop Ischemic Events P value OR (95% CI)
Present (n = 31) Absent (n = 502) Uni Multi
Mean age at op (yrs) 10.8 ± 4.0 9.5 ± 3.7 0.074 0.032 1.129 (1.011–1.260)
Sex, female/male ratio 17/14 255/247 0.662 0.679 1.174 (0.550–2.504)
Ischemic presentation 19 (61.3) 347 (69.1) 0.707   
Admission mRS score
 Mean 1.4 ± 0.6 1.4 ± 0.6 0.789   
 0–1 20 (64.5) 351 (30.1)    
 2–5 11 (35.5) 151 (69.9)    
Past medical history
 Family history 2 (6.5) 36 (7.2) 0.880   
 Hypertension 1 (3.2) 6 (1.2) 0.355   
 Thyroid disease 1 (3.2) 3 (0.6) 0.143   
 Hyperlipidemia 0 (0.0) 3 (0.6) 0.999   
 Smoking & Alcohol use 0 (0.0) 2 (0.4) 0.999   
 Diabetes 0 (0.0) 1 (0.2) 1.000   
Suzuki stagea
 Mean 3.0 ± 0.9 2.9 ± 0.9 0.522 0.796 1.061 (0.677–1.662)
 1 0 (0.0) 12 (2.6)    
 2 10 (33.3) 144 (31.0)    
 3 11 (36.7) 205 (44.1)    
 4 8 (26.7) 88 (18.9)    
 5 1 (3.3) 16 (3.4)    
PCA involvementa 11 (36.7) 105 (22.6) 0.082 0.043 2.587 (1.030–6.496)
Collateral circulationa
 Mean 6.6 ± 2.1 7.0 ± 1.8 0.276   
 Grade I (0–4) 6 (20.0) 48 (10.3)    
 Grade II (5–8) 16 (53.3) 326 (70.1)    
 Grade III (9–12) 8 (26.7) 91 (19.6)    
ECA collaterala
 STA collateral 0 (0.0) 4 (0.9) 0.999   
 MMA collateral 11 (36.7) 186 (40.0) 0.718 0.154 0.533 (0.224–1.267)
 OA collateral 3 (10.0) 26 (5.6) 0.326 0.659 1.365 (0.343–5.433)
Surgical modalities
 Indirect bypass 26 (83.9) 421 (83.9) 0.942 0.739 1.435 (0.171–12.013)
 Direct bypass 4 (12.9) 66 (13.1) 0.934 0.985 0.979 (0.099–9.718)
 Combined bypass 1 (3.2) 15 (3.0)    
  1. ECA External carotid artery, MMA Middle meningeal artery, OA Occipital artery, PCA Posterior cerebral artery, STA Superficial temporal artery
  2. a495 hemispheres received DSA