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Table 3 Association of procedure and patient characteristics with 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 CT Ratio (%) P-value Odds Ratio (95% CI)
< 2.5 > 2.5
Age (years) 46.02 ± 17.84 51.60 ± 18.10 < 0.001  
Procedure    < 0.001  
 Total Hip Replacement 14 (19.4) 58 (80.6)   
 Total Knee Replacement 11 (8.6) 117 (91.4)   
 Open Reduction Internal Fixation 30 (25.0) 90 (75.0)   
 Closed Reduction Internal Fixation 20 (13.8) 125 (86.2)   
 Minor Wound Debridement 37 (45.7) 44 (54.3)   
 Major Wound Debridement 36 (62.1) 22 (37.9)   
 Tumor Resection 9 (29.0) 22 (71.0)   
 Arthroscopy 9 (22.5) 31 (77.5)   
 Hand and Microvascular Surgeries 6 (25.0) 18 (75.0)   
Gender    < 0.001 1.93 (1.33–2.80)
 Male 122 (29.3) 294 (70.7)   
 Female 50 (17.7) 233 (82.3)   
ASA Status    0.168  
 ASA I 28 (22.2) 98 (77.8)   
 ASA II 87 (22.9) 293 (77.1)   
 ASA III 46 (27.7) 120 (72.3)   
 ASA IV 10 (40.0) 15 (60.0)   
Surgery Type    0.255  
 Emergency 64 (22.4) 222 (77.6)   
 lective 108 (26.2) 305 (73.8)   
Use of Tourniquet    0.003 0.59 (0.42–0.83)
 Yes 84 (20.5) 326 (79.5)   
 No 88 (30.4) 201 (69.6)