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Table 3 Chi square table for outcome in the tracheostomised and non-tracheostomised groups.

From: Early tracheostomy in closed head injuries: experience at a tertiary center in a developing country – a prospective study

  Discharged Expired
  32 18
Tracheostomy 26.5 23.5
  1.141 1.30
  21 29
Non Tracheostomy 26.5 23.5
  1.141 1.30
  1. Degree of freedom = 1
  2. Overall cell chi = 4.88
  3. p = 0.0275 (significant)