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Table 4 Logistic regression model for effect of baseline characteristics on CT ratio

From: “It’s a precious gift, not to waste”: is routine cross matching necessary in orthopedics surgery? Retrospective study of 699 patients in 9 different procedures

Characteristics P-value 95% Confidence Interval
Age 0.03 1.001–1.03
Procedure < 0.001 0.77–0.93
Gender 0.13 0.91–2.11
ASA Status (reference ASA I) 0.01  
 ASA II 0.007 1.47–10.96
 ASA III 0.07 0.94–5.64
 ASA IV 0.35 0.63–3.82
Surgery type 0.13 0.87–2.88
Use of torniquet 0.007 0.26–0.81