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Table 2 Multivariate analysis of the trends in revascularisation procedures and in in-hospital mortality for patients discharged from hospital with a main diagnosis of acute myocardial infarction, Switzerland and Swiss regions, for period 1998–2008

From: Trends in hospital discharges, management and in-hospital mortality from acute myocardial infarction in Switzerland between 1998 and 2008

 

Switzerland

Leman

Mittelland

Northwest

Zurich

Eastern

Central

Ticino

Revascularization procedures

        

Number of discharges, all

102,729

18,702

21,275

19,492

17,684

12,522

6,408

6,646

ICU

0.99 (0.98–1.00)

1.06 (1.05–1.07)

0.99 (0.98–1.01)

0.94 (0.93–0.95)

0.92 (0.91–0.93)

1.10 (1.08–1.11)

1.10 (1.08–1.12)

0.85 (0.83–0.87)

Angioplasty

1.25 (1.24–1.25)

1.20 (1.19–1.21)

1.27 (1.25–1.28)

1.26 (1.24–1.27)

1.21 (1.19–1.22)

1.60 (1.55–1.64)

1.80 (1.72–1.89)

1.10 (1.08–1.12)

Bare stent

1.11 (1.10–1.12)

1.14 (1.13–1.15)

1.08 (1.06–1.10)

1.06 (1.04–1.08)

1.07 (1.06–1.08)

1.31 (1.26–1.36)

1.62 (1.54–1.69)

1.05 (1.02–1.07)

Drug-eluting stent

1.66 (1.65–1.68)

1.59 (1.55–1.64)

1.54 (1.51–1.58)

1.52 (1.49–1.56)

1.96 (1.88–2.03)

2.14 (2.03–2.26)

2.97 (2.54–3.46)

2.58 (2.38–2.80)

CABG

1.08 (1.06–1.09)

1.06 (1.03–1.09)

1.19 (1.15–1.23)

1.07 (1.03–1.10)

1.03 (1.00–1.06)

1.71 (1.25–2.33)

DNC

1.02 (0.98–1.06)

Circulatory assistance

1.17 (1.14–1.19)

1.10 (1.06–1.14)

1.27 (1.20–1.35)

1.24 (1.15–1.33)

1.13 (1.10–1.17)

2.09 (1.59–2.74)

1.92 (1.45–2.54)

1.02 (0.88–1.19)

Thrombolysis

1.00 (0.99–1.02)

1.02 (1.00–1.05)

0.99 (0.97–1.02)

0.92 (0.88–0.95)

1.06 (1.03–1.08)

1.09 (1.04–1.14)

0.96 (0.90–1.02)

0.91 (0.87–0.95)

In-hospital mortality

        

Number of discharges §

73,764

13,301

13,905

14,143

13,338

10,132

4,826

4,119

Seven-day mortality

1.00 (0.99–1.01)

1.00 (0.98–1.02)

1.02 (1.00–1.04)

0.99 (0.97–1.01)

0.99 (0.97–1.01)

0.99 (0.96–1.01)

1.03 (0.99–1.06)

1.02 (0.98–1.06)

Overall mortality

1.00 (0.99–1.01)

1.00 (0.98–1.02)

1.02 (1.00–1.04)

1.00 (0.98–1.02)

0.99 (0.97–1.01)

0.98 (0.96–0.99)

1.03 (1.00–1.06)

1.02 (0.99–1.06)

Number of discharges §§

62,021

11,417

11,371

11,853

11,798

8756

4152

2674

Seven-day mortality

1.01 (1.00–1.02)

1.00 (0.98–1.03)

1.03 (1.01–1.05)

1.00 (0.97–1.02)

1.00 (0.98–1.02)

0.99 (0.97–1.02)

1.05 (1.01–1.09)

DNC

Overall mortality

1.01 (1.00–1.02)

1.01 (0.99–1.03)

1.03 (1.01–1.05)

1.01 (0.99–1.03)

1.00 (0.98–1.01)

0.99 (0.96–1.01)

1.04 (1.01–1.08)

1.03 (0.99–1.07)

  1. Results are expressed as multivariate adjusted Odds ratio and (95% confidence interval) for a one-year increase. ICU intensive care unit; CABG coronary artery bypass graft; DNC model did not converge. Statistical analysis by multivariate logistic regression. For revascularization procedures, analysis was conducted adjusting for age (continuous), gender and transfer type (in-house, inbound, outbound and passing through) for each Swiss region; for Switzerland, a further adjustment was performed on region. For in-hospital mortality, analysis was conducted adjusting for age (continuous), gender, ICU stay (yes/no), hemodynamic assistance (yes/no) and revascularization procedures (yes/no code: bare stent, drug eluting stent and CABG) for each Swiss region; for Switzerland, a further adjustment was performed on region. §, patients not transferred to another hospital (inboud or in-house); §§, patients managed in a single hospital (in-house).
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