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Table 3 Rate of adverse outcomes following transfusion with fresher or older blood, results from generalised propensity score analyses

From: Use of propensity score methods to address adverse events associated with the storage time of blood in an obstetric population: a comparison of methods

 

Crude rate (95 % CI)

Matched rate (95 % CI)

Stratified rate (95 % CI)

Weighted rate (95 % CI)

Regression rate (95 % CI)

Severe morbidity

 Freshest

5.50 (3.41, 8.69)

4.03 (3.13, 5.16)

5.80 (3.12, 8.48)

5.11 (3.00, 8.45)

5.97 (2.02, 18.87)

 2nd decile

3.14 (1.70, 5.61)

 

2.74 (1.22, 4.26)

4.45 (2.64,7.32)

4.22 (2.25, 7.94)

 3rd decile

2.82 (1.41,5.35)

 

2.31 (0.63, 3.99)

2.11 (0.89, 4.52)

3.64 (2.17, 6.14)

 4th decile

4.87 (2.64,8.60)

 

5.09 (2.36, 7.82)

5.64 (3.18, 9.66)

3.54 (2.29, 5.46)

 5th decile

4.14 (2.47,6.78)

 

4.27 (2.2, 6.35)

4.16 (2.46, 6.85)

3.59 (2.41, 5.32)

 6th decile

4.21 (2.41, 7.13)

 

4.11 (1.74, 6.48)

4.11 (2.29, 7.12)

3.65 (2.44, 5.44)

 7th decile

2.76 (1.31, 5.44)

 

2.96 (0.66, 5.27)

2.71 (1.24, 5.52)

3.6 (2.21, 5.87)

 8th decile

2.83 (1.26, 5.85)

 

2.63 (0.17, 5.09)

3.83 (1.90, 7.28)

3.38 (1.79, 6.54)

 9th decile

3.72 (2.07, 6.45)

 

3.1 (−2.40, 8.6)

2.10 (0.87, 4.59)

2.86 (1.23, 7.16)

 Oldest

3.14 (1.49, 6.17)

3.42 (2.61, 4.48)

1.98 (−2.17, 6.13)

1.36 (0.23, 4.30)

1.83 (0.47, 8.54)

Readmission/transfer

 Freshest

14.56 (11.04, 18.95)

14.16 (12.48, 16.03)

14.86 (10.72, 18.99)

19.33 (15.08, 24.41)

12 (6.40, 23.47)

 2nd decile

15.14 (11.75, 19.29)

 

14.94 (11.20, 18.68)

14.68 (11.24, 18.94)

13.96 (10.23, 18.99)

 3rd decile

12.23 (9.05, 16.30)

 

12.54 (9.03, 16.05)

13.66 (10.22, 18.01)

14.18 (11.03, 18.12)

 4th decile

13.27 (9.42, 18.36)

 

13.42 (9.01, 17.84)

13.75 (9.74, 19.02)

14.29 (11.6, 17.49)

 5th decile

15.19 (11.84, 19.27)

 

15.39 (11.71, 19.06)

15.31 (11.90, 19.47)

14.48 (11.99, 17.39)

 6th decile

15.21 (11.61, 19.66)

 

14.73 (10.50, 18.95)

14.52 (10.91, 19.05)

14.83 (12.26, 17.84)

 7th decile

13.45 (9.97, 17.88)

 

14.07 (9.51, 18.64)

13.72 (10.10, 18.37)

15.19 (12.12, 18.89)

 8th decile

15.79 (11.74, 20.89)

 

16.23 (9.92, 22.54)

18.19 (13.70, 23.74)

15.35 (11.55, 20.19)

 9th decile

14.24 (10.83, 18.50)

 

14.48 (5.33, 23.63)

14.63 (11.00, 19.18)

15.08 (10.54, 21.4)

 Oldest

14.51 (10.68, 19.39)

14.63 (12.93, 16.52)

13.86 (1.81, 25.91)

10.74 (7.12, 15.82)

13.29 (7.70, 22.62)