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Table 2 Comparison of rates and total volume of transfusion between two groups

From: Effects of intravenous iron monotherapy for patients with iron deficient anemia undergoing total knee arthroplasty

Outcome

Group

Crude

PS matching

Event/n

OR (95% CI)

p-value

Event/n

OR (95% CI)

p-value

Rate of transfusion

Group I

8/45

0.949 (0.411, 2.190)

0.903a

8/45

0.754 (0.212, 2.686)

0.754b

Group C

41/221

  

9/45

  
  

Mean ± SD

p-value

Mean ± SD

p-value

Volume of transfusion (mL)

Group I

35.56 ± 77.33

0.602c

35.56 ± 77.33

0.791c

Group C

43.44 ± 94.94

 

40.00 ± 80.90

 
  1. PS propensity score
  2. ap-value by simple Logistic regression; bp-value by conditional Logistic regression with adjusted variables in Table 1, cp-value by student’s t test