|
Strategy 1
|
Matched patients (n = 1242)
|
Unmatched patients (n = 41)
|
p-value
|
|---|
|
Age (mean, sd)
|
63.5 (12.7)
|
53.6 (15.1)
|
< 0.001a
|
|
Male sex (%, n)
|
77.3 (960)
|
80.5 (33)
|
0.63e
|
|
Risk of death % (median, IQR)
|
1.08 (0.67–2.10)
|
7.50 (1.33–14.5)
|
< 0.001c
|
|
Urgent/emergent procedure (%, n)
|
22.0 (273)
|
58.5 (24)
|
< 0.001e
|
|
Procedure type (%, n)
|
|
CABG
|
56.6 (703)
|
26.8 (11)
|
< 0.001e
|
|
Valve repair/replacement
|
15.1 (187)
|
17.1 (7)
|
|
Combined CABG/Valve
|
7.49 (93)
|
4.9 (2)
|
|
Other
|
20.1 (259)
|
51.2 (21)
|
|
Unmatched patients:
|
Strategy 1 (n = 41)
|
Strategy 2 (n = 132)
|
Strategy 3 (n = 72)
|
Strategy 4 (n = 81)
|
p-value
|
|---|
|
Age (mean, sd)
|
53.6 (15.1)
|
59.7 (14.7)
|
57.2 (15.7)
|
57.7 (16.2)
|
0.15b
|
|
Male sex (%, n)
|
80.5 (33)
|
80.3 (106)
|
81.9 (59)
|
80.3 (65)
|
0.99e
|
|
Risk of death % (median, IQR)
|
7.50 (1.33–14.5)
|
2.36 (1.2–7.6)
|
4.26 (1.29–13.2)
|
1.62 (0.82–8.78)
|
0.02d
|
|
Urgent/emergent procedure (%, n)
|
58.5 (24)
|
43.2 (57)
|
55.6 (40)
|
35.8 (29)
|
0.02e
|
|
Procedure type (%, n)
|
|
CABG
|
26.8 (11)
|
29.6 (39)
|
29.2 (21)
|
39.5 (32)
|
0.76e
|
|
Valve repair/replacement
|
17.1 (7)
|
19.7 (26)
|
16.7 (12)
|
13.6 (11)
|
|
Combined CABG/Valve
|
4.9 (2)
|
5.3 (7)
|
5.6 (4)
|
8.6 (7)
|
|
Other
|
51.2 (21)
|
45.5 (60)
|
48.6 (35)
|
38.3 (31)
|
- Unmatched patient p-values refer to a comparison between all 4 groups. Comparison uses total available patients in database as denominator (n = 1283)
- Tests used as follows:
- aStudent’s t-test
- bAnalysis of variance (ANOVA)
- cWilcoxon rank-sum
- dKruskall-Wallis
- eChi-square
