Blood Transfusions in Total Hip and Knee Arthroplasty: An Analysis of Outcomes
Table 5
This table shows the PAF for risk factors on selected outcomes.
Exposure
Population attributable fraction (95% CI)
Combined major complications
Major cardiac complications
Major pulmonary complications
Acute renal failure
30-Day mortality
Critical care services admission
Blood transfusion
9.51% (9.12–9.90)
4.77% (4.22–5.32)
19.64% (18.41–20.86)
29.75% (28.41–31.08)
17.15% (12.71–21.37)
10.90% (10.08–11.73)
All comorbidities
13.40% (12.94–13.86)
12.42% (11.75–13.07)
21.46% (20.12–22.78)
32.77% (31.37–34.14)
20.66% (16.07–25.00)
19.44% (18.47–20.40)
Diabetes
3.17% (2.82–3.52)
2.03% (1.52–2.53)
2.55% (1.48–3.61)
11.86% (10.59–13.11)
5.21% (1.46–8.81)
2.03% (1.28–2.77)
Sleep apnea
3.44% (3.20–3.68)
4.23% (3.88–4.58)
8.47% (7.64–9.30)
5.62% (4.73–6.50)
2.50% (0.08–4.85)
7.35% (6.77–7.93)
Obesity
4.19% (3.85–4.53)
2.59% (2.14–3.05)
7.47% (6.37–8.55)
15.94% (14.73–17.13)
3.78% (0.63–6.83)
7.07% (6.29–7.84)
Age group* (ref ≤65)
34.70% (33.63–35.75)
58.02% (56.85–59.16)
15.92% (12.23–19.46)
19.46% (15.43–23.30)
49.54% (38.69–58.47)
11.37% (8.78–13.89)
Gender*(ref= F)
8.18% (7.63–8.72)
19.73% (18.93–20.52)
2.76% (1.15–4.34)
22.73% (21.04–24.37)
23.69% (18.07–28.92)
6.03% (4.85–7.20)
CI: confidence interval of the PAF. PAF compares the proportion of outcome to a population, where all individuals are ≤65 years or are all female for the risks age group and gender, respectively.
