scholarly journals Closure of Petersen's defect in gastrectomy for gastric cancer: an interrupted time-series analysis from a high-volume institution in China

2020 ◽  
Author(s):  
Tao Pan ◽  
Hui Wang ◽  
Kai Liu ◽  
Xin-zu Chen ◽  
Wei-han Zhang ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Time Series ◽  
Risk Factor ◽  
Internal Hernia ◽  
Odds Ratio ◽  
Interrupted Time Series ◽  
High Volume ◽  
Interrupted Time Series Analysis ◽  
Closure Group ◽  
Group 1

Abstract Background Internal hernia (IH) and small bowel obstruction (SBO) are serious complications after gastrectomy for gastric cancer. Whether closure of Petersen's defect (PD) might reduce the rates is unknown. Methods Patients underwent gastrectomy with PD were enrolled. From January 2014 to January 2017, we performed gastrectomy without closure of PD (non-closure group). From February 2017 to June 2018, we closed PD (closure group). The rates of IH, suspected internal hernia (SIH), and SBO were compared between the two groups. Results Among a total of 1213 patients, 151 patients (12.4%) developed SBO after gastrectomy, 10 patients (0.8%) developed IH and 20 patients (1.6%) developed SIH. The rate of SBO and SIH were 15.0% (124/828) and 2.3% (19/828) respectively in the non-closure group, compared with 7.0% (27/385) and 0.3% (1/385) in the closure group (p = 0.017 and p = 0.015 respectively). The rate of IH in the closure group (1/385, 0.3%) was lower than the non-closure group (9/828, 1.1%). Non-closure of PD was a risk factor for IH and SIH [odds ratio (OR) 6.58, 95%CI 1.56–27.85, p = 0.011]. Conclusions Closure of PD is recommended after gastrectomy, as we noticed a significantly lower rate of SBO and SIH, and a tendency for lower rate of IH.

scholarly journals Closure of Petersen’s defect in gastrectomy for gastric cancer: an interrupted time series analysis from a high-volume institution in China

2020 ◽  
Author(s):  
Tao Pan ◽  
Hui Wang ◽  
Kai Liu ◽  
Xin-zu Chen ◽  
Wei-han Zhang ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Interrupted Time Series ◽  
High Volume ◽  
Rank Test ◽  
Interrupted Time Series Analysis ◽  
Log Rank Test ◽  
Petersen’S Hernia ◽  
Closure Group ◽  
Group 1

Abstract Purpose Petersen’s hernia (PH) is a serious complication after gastrectomy for gastric cancer. The aim of this study was to investigate whether closure of Petersen’s defect (PD) can decrease the rates of PH and suspected Petersen’s hernia (SPH). Methods Patients who underwent gastrectomy with PD were enrolled. From January 2014 to January 2017, we performed gastrectomy without PD closure (non-closure group). From February 2017 to June 2018, we closed PDs during gastrectomy (closure group). The rates of PH and SPH were compared between the two groups. The last follow-up was updated in August 2020. Results Among a total of 1213 patients, 12 patients (1.0%) developed PH, and 23 patients (1.9%) developed SPH. The rate of PH in the closure group was significantly lower than that in the non-closure group (1/385, 0.3% versus 11/828, 1.3%, p = 0.042, log-rank test). The rate of SPH in the closure group was significantly lower than that in the non-closure group (1/385, 0.3% versus 22/828, 2.7%, p = 0.008, log-rank test). Non-closure of PD was a risk factor for PH and SPH (odds ratio (OR) 7.72, 95% CI 1.84–32.35, p = 0.006). Conclusions PD closure is recommended after gastrectomy for gastric cancer, as the rates of PH and SPH were significantly decreased.

The effects of centralizing cancer surgery on postoperative mortality: A systematic review and meta-analysis

2021 ◽  
pp. 135581962110089
Author(s):  
Roberto Grilli ◽  
Federica Violi ◽  
Maria Chiara Bassi ◽  
Massimiliano Marino
Keyword(s):  
Evaluation Studies ◽  
Meta Analysis ◽  
Postoperative Mortality ◽  
Interrupted Time Series ◽  
High Volume ◽  
Cancer Surgery ◽  
Interrupted Time Series Analysis ◽  
Meta Regression ◽  
Meta Regression Analysis ◽  
After Cancer

Objectives To review the evidence of the effects of centralization of cancer surgery on postoperative mortality. Methods We searched Medline, Embase, Cinahl, Cochrane and Scopus (up to November 2019) for studies that (i) assessed the effects of centralization of cancer surgery policies on in-hospital or 30-day mortality, or (ii) described changes in both postoperative mortality for a surgical intervention and degree of centralization using reduction in the number of hospitals or increases in the proportion of patients undergoing cancer surgery at high volume hospitals as proxy. PRISMA guidelines were followed. We estimated pooled odds ratios (OR) and conducted meta-regression to assess the relationship between degree of centralization and mortality. Results A total of 41 studies met our inclusion criteria of which 15 evaluated the effect of centralization policies on postoperative mortality after cancer surgery and 26 described concurrent changes in the degree of centralization and postoperative mortality. Policy evaluation studies mainly used before-after designs (n = 13) or interrupted time series analysis (n = 2), mainly focusing on pancreatic, oesophageal and gastric cancer. All but one showed some degree of reduction in postoperative mortality, with statistically significant effects demonstrated by six studies. The pooled odds ratio for centralization policy effect was 0.68 (95% Confidence interval: 0.54–0.85; I2 = 80%). Meta-regression analysis of the 26 descriptive studies found that an increase of the proportion of patients treated at high volume hospitals was associated with greater reduction in postoperative mortality. Conclusions Centralization of cancer surgery is associated with reduced postoperative mortality. However, existing evidence tends to be of low quality and estimates of the effect size are likely inflated. There is a need for prospective studies using more robust approaches, and for centralization efforts to be accompanied by well-designed evaluations of their effectiveness.

scholarly journals Does admission prevalence change after reconfiguration of inpatient services? An interrupted time series analysis of the impact of reconfiguration in five centres

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Joanne Martin ◽  
Edwin Amalraj Raja ◽  
Steve Turner
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Emergency Admission ◽  
Interrupted Time Series ◽  
Interrupted Time Series Analysis ◽  
Emergency Admissions ◽  
Series Analysis ◽  
Inpatient Services ◽  
The Impact ◽  
Admission Prevalence

Abstract Background Service reconfiguration of inpatient services in a hospital includes complete and partial closure of all emergency inpatient facilities. The “natural experiment” of service reconfiguration may give insight into drivers for emergency admissions to hospital. This study addressed the question does the prevalence of emergency admission to hospital for children change after reconfiguration of inpatient services? Methods There were five service reconfigurations in Scottish hospitals between 2004 and 2018 where emergency admissions to one “reconfigured” hospital were halted (permanently or temporarily) and directed to a second “adjacent” hospital. The number of emergency admissions (standardised to /1000 children in the regional population) per month to the “reconfigured” and “adjacent” hospitals was obtained for five years prior to reconfiguration and up to five years afterwards. An interrupted time series analysis considered the association between reconfiguration and admissions across pairs comprised of “reconfigured” and “adjacent” hospitals, with adjustment for seasonality and an overall rising trend in admissions. Results Of the five episodes of reconfiguration, two were immediate closure, two involved closure only to overnight admissions and one with overnight closure for a period and then closure. In “reconfigured” hospitals there was an average fall of 117 admissions/month [95% CI 78, 156] in the year after reconfiguration compared to the year before, and in “adjacent” hospitals admissions rose by 82/month [32, 131]. Across paired reconfigured and adjacent hospitals, in the months post reconfiguration, the overall number of admissions to one hospital pair slowed, in another pair admissions accelerated, and admission prevalence was unchanged in three pairs. After reconfiguration in one hospital, there was a rise in admissions to a third hospital which was closer than the named “adjacent” hospital. Conclusions There are diverse outcomes for the number of emergency admissions post reconfiguration of inpatient facilities. Factors including resources placed in the community after local reconfiguration, distance to the “adjacent” hospital and local deprivation may be important drivers for admission pathways after reconfiguration. Policy makers considering reconfiguration might consider a number of factors which may be important determinants of admissions post reconfiguration.

Recession and risk of suicide in Denmark during the 2009 global financial crisis: an ecological register-based study

2021 ◽  
pp. 140349482110132
Author(s):  
Agnieszka Konieczna ◽  
Sarah Grube Jakobsen ◽  
Christina Petrea Larsen ◽  
Erik Christiansen
Keyword(s):  
Time Series ◽  
Financial Crisis ◽  
Time Series Analysis ◽  
Suicide Rate ◽  
Global Financial Crisis ◽  
Interrupted Time Series ◽  
Interrupted Time Series Analysis ◽  
Series Analysis ◽  
Prevention Programmes ◽  
The Impact

Aim: The aim of this study is to analyse the potential impact from the financial crisis (onset in 2009) on suicide rates in Denmark. The hypothesis is that the global financial crisis raised unemployment which leads to raising the suicide rate in Denmark and that the impact is most prominent in men. Method: This study used an ecological study design, including register data from 2001 until 2016 on unemployment, suicide, gender and calendar time which was analysed using Poisson regression models and interrupted time series analysis. Results: The correlation between unemployment and suicide rates was positive in the period and statistically significant for all, but at a moderate level. A dichotomised version of time (calendar year) showed a significant reduction in the suicide rate for women (incidence rate ratio 0.87, P=0.002). Interrupted time series analysis showed a significant decreasing trend for the overall suicide rate and for men in the pre-recession period, which in both cases stagnated after the onset of recession in 2009. The difference between the genders’ suicide rate changed significantly at the onset of recession, as the rate for men increased and the rate for women decreased. Discussion: The Danish social welfare model might have prevented social disintegration and suicide among unemployed, and suicide prevention programmes might have prevented deaths among unemployed and mentally ill individuals. Conclusions: We found some indications for gender-specific differences from the impact of the financial crises on the suicide rate. We recommend that men should be specifically targeted for appropriate prevention programmes during periods of economic downturn.

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