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Table 4 Logistic regression analysis of factors associated with neurosurgical management of ICH

From: Current management of intracerebral haemorrhage in China: a national, multi-centre, hospital register study

Surgical intervention Odds ratio (95% CI)
  Crude n = 1572* Adjusted n = 1555
Socio-demographic factors   
   Age 0.98 (0.96, 0.99) 0.98 (0.96, 0.99)
   Female 0.88 (0.60, 1.30) 0.84 (0.56, 1.27)
   Living alone 1.49 (0.68, 3.24)  
   Low education (primary only or illiterate) 1.07 (0.72, 1.59)  
   Main lifetime occupation type   
Manual work 1.01 (0.66, 1.55)  
None reported 0.94 (0.48, 1.82)  
Hospital factors   
   Level three vs level two category 2.77 (0.87, 8.85)  
   Large size (>500 beds) 1.63 (0.53, 5.00)  
   Teaching status 2.02 (0.49, 8.38)  
   Situated in a rich provincial area 1.11 (0.42, 2.90)  
   Situated in northern China 0.97 (0.37, 2.53)  
Medical history   
   ≥ 2 cardiovascular risk factors 0.70 (0.46, 1.07)  
   Current smoker 1.14 (0.74, 1.76)  
   Regular alcohol consumption 1.37 (0.91, 2.07)  
   Overweight (body mass index ≥24) 1.72 (1.17, 2.52) 1.68 (1.12, 2.51)
Clinical features   
   Time from symptom onset to hospital presentation   
<6 hours 1.41 (0.93, 2.11)  
Unknown -§  
   Poor admission GCS score 4.04 (2.70, 6.04) 3.83 (2.51, 5.83)
   Clinical classification - TACS 3.08 (1.84, 5.16) 2.23 (1.30, 3.83)
  1. *Model with overweight was run on n = 1571 excluding 1 missing value, and model with severe admission GCS score was run on n = 1556 excluding 16 missing values
  2. Reference group: non-manual work including management, professional and related, service, sales/commercial, armed forces, and clerical/administration support
  3. Defined as ≥2 of the following: history of hypertension, diabetes, hyperlipidaemia, atrial fibrillation; prior stroke, prior transient ischaemic attack, and prior coronary artery disease
  4. §Model cannot be run, no observations in outcome group for those whose time from symptom onset to hospital presentation is unknown