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The incidence of surgical site infections may be underreported if the data are not routinely validated for accuracy. Our goal was to investigate the communicated SSI rate from a large network of Swiss hospitals compared with the results from on-site surveillance quality audits.
Retrospective cohort study.
In total, 81,957 knee and hip prosthetic arthroplasties from 125 hospitals and 33,315 colorectal surgeries from 110 hospitals were included in the study.
Hospitals had at least 2 external audits to assess the surveillance quality. The 50-point standardized score per audit summarizes quantitative and qualitative information from both structured interviews and a random selection of patient records. We calculated the mean National Healthcare Safety Network (NHSN) risk index adjusted infection rates in both surgery groups.
The median NHSN adjusted infection rate per hospital was 1.0% (interquartile range [IQR], 0.6%–1.5%) with median audit score of 37 (IQR, 33–42) for knee and hip arthroplasty, and 12.7% (IQR, 9.0%–16.6%), with median audit score 38 (IQR, 35–42) for colorectal surgeries. We observed a wide range of SSI rates and surveillance quality, with discernible clustering for public and private hospitals, and both lower infection rates and audit scores for private hospitals. Infection rates increased with audit scores for knee and hip arthroplasty (P value for the slope = .002), and this was also the case for planned (P = .002), and unplanned (P = .02) colorectal surgeries.
Surveillance systems without routine evaluation of validity may underestimate the true incidence of SSIs. Audit quality should be taken into account when interpreting SSI rates, perhaps by adjusting infection rates for those hospitals with lower audit scores.
In Switzerland assisted suicide is legal if no self-interest is
To compare the strength and direction of associations with
sociodemographic factors between assisted and unassisted suicides.
We calculated rates and used Cox and logistic regression models in a
longitudinal study of the Swiss population.
Analyses were based on 5 004 403 people, 1301 assisted and 5708
unassisted suicides from 2003 to 2008. The rate of unassisted suicides
was higher in men than in women, rates of assisted suicides were similar
in men and women. Higher education was positively associated with
assisted suicide, but negatively with unassisted. Living alone, having no
children and no religious affiliation were associated with higher rates
Some situations that indicate greater vulnerability such as living alone
were associated with both assisted and unassisted suicide. Among the
terminally ill, women were more likely to choose assisted suicide,
whereas men died more often by unassisted suicide.
To quantify the economic burden of in-hospital surgical site infections (SSIs) at a European university hospital.
Matched case-control study nested in a prospective observational cohort study.
Basel University Hospital in Switzerland, where an average of 28,000 surgical procedures are performed per year.
All in-hospital occurrences of SSI associated with surgeries performed between January 1, 2000, and December 31, 2001, by the visceral, vascular, and traumatology divisions at Basel University Hospital were prospectively recorded. Each case patient was matched to a control patient by age, procedure code, and National Nosocomial Infection Surveillance System risk index. The case-control pairs were analyzed for differences in cost of hospital care and in provision of specialized care.
A total of 6,283 procedures were performed:187 SSIs were detected in inpatients, 168 of whom were successfully matched with a control patient. For case patients, the mean additional hospital cost was SwF19,638 (95% confidence interval [CI], SwF8,492–SwF30,784); the mean additional postoperative length of hospital stay was 16.8 days (95% CI, 13–20.6 days); and the mean additional in-hospital duration of antibiotic therapy was 7.4 days (95% CI, 5.1–9.6 days). Differences were primarily attributable to organ space SSIs (n = 76).
Ina European university hospital setting, SSIs are costly and constitute a heavy and potentially preventable burden on both patients and healthcare providers.
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