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
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)

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).

Insam et al.

Insam et al. BMC Public Health 2013 13:270   doi:10.1186/1471-2458-13-270

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