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Supplement scleral gear to the treatments for rhegmatogenous retinal detachment by pars plana vitrectomy: A meta-analysis involving randomized controlled trials.
Policies increasing healthcare availability might decrease the cost of delaying accessing of care, leading to potential negative consequences if patients delay treatment. We analyze a policy designed to increase access to kidney transplantation through the use of time since dialysis inception to prioritize patients for transplant, which was piloted at 26 of the 271 kidney transplant centers in the United States in 2006 and 2007. We model the patient's optimization problem comparing the benefits and costs of early waitlisting and predict that the policy change will lead to delayed waitlisting. To empirically test this prediction, we use difference-in-differences fixed effects panel regression techniques to analyze data on patients who began dialysis between 1/1/2000 and 12/31/2009. The results support the model's prediction; patients on dialysis who waitlist for kidney transplantation increase pre-waitlist dialysis duration by 11.6 percent or approximately 76 days from a pre-policy mean of 652 days (SD = 654). With regard to waitlist outcomes, the policy is associated with a 4.5 percentage point decrease in the probability of receiving a deceased donor transplant, somewhat offset by a 3.0 percentage point increase in the probability of receiving a live donor transplant. On the extensive margin, patients on dialysis decrease their likelihood of ever waitlisting by 1.5 percentage points. We find an increase in pre-waitlist dialysis time and a decrease in the likelihood of waitlisting at all, especially among populations likely to have experienced increased access to transplantation through the policy change patients self-identifying as Black or Hispanic rather than Non-Hispanic White, and patients without private insurance. These results suggest that some individuals may not benefit if their access to care increases, if the increase in access sufficiently decreases the penalty of delaying accessing of care.Available COVID-19 data shows higher shares of cases and deaths occur among Black Americans, but reporting of data by race is poor. This paper investigates disparities in county-level mortality rates across counties with higher and lower than national average Black population shares using nonlinear regression decomposition and estimates potential differential impact of social distancing measures. I find counties with Black population shares above the national share have mortality rates 2 to 3 times higher than in other counties. Observable differences in living conditions, health, and work characteristics reduce the disparity to approximately 1.25 to 1.65 overall, and explain 100% of the disparity at 21 days after the first case. Though higher rates of comorbidities in counties with higher Black population shares are an important predictor, living situation factors like single parenthood and population density are just as important. Higher rates of co-residence with grandchildren explain 11% of the 21 day disoyment before the first case was associated with higher mortality rates, especially in more diverse counties.
Indigenous Canadians may be at an increased risk of non-medical cannabis use. The aim of this review was to synthesize the prevalence of non-medical cannabis use and its associated factors among Indigenous Canadians.

We systematically searched MEDLINE, EMBASE, Web of Science, and Scopus from inception to January 29th, 2020 for publications reporting the prevalence of non-medical cannabis use among Indigenous Canadians. We included studies published in English after January 1st, 2000. Included publications were hand-searched for potentially relevant peer-reviewed and gray literature publications. Results were synthesized descriptively.

We identified 16 peer-reviewed and 7 gray literature publications which met our inclusion criteria. All data were collected prior to cannabis legalization in Canada (October 17th, 2018). selleck chemical The most recent estimates of prevalence of use in the past year were 27% among on-reserve First Nations adults, 50% among off-reserve First Nations adults, and 60% among Nunavik Inuit. In youth, they were 45% among all Indigenous youth grades 9-12, 27% among on-reserve First Nations youth aged 12-17, and 69% in Nunavik Inuit aged 16-22. Direct comparisons indicated a 1.2-15 times higher prevalence of use in Indigenous compared to non-Indigenous youth. Factors associated with cannabis use in adults included younger age and male sex. In youth, factors included older age, poorer mental and physical health, and a poorer relationship with school.

Results suggest that Indigenous Canadians are at a higher risk for non-medical cannabis use than the general Canadian population. Further research is warranted to inform the development of targeted interventions.
Results suggest that Indigenous Canadians are at a higher risk for non-medical cannabis use than the general Canadian population. Further research is warranted to inform the development of targeted interventions.
Needle exchange programs (NEP) are important in reducing risk behaviours among people who inject drugs (PWID), also exposed to HIV and hepatitis C (HCV) through injecting drug use (IDU). Women (WWID) compared to men who inject drugs (MWID), are particularly vulnerable with complex needs, however less is known about their risk determinants and NEP outcomes.

In an open prospective NEP cohort, 697 WWID and 2122 MWID were followed, 2013-2018. Self-reported socio/drug-related determinants for receptive injection (needle/syringe and paraphernalia) and sexual risk behaviours at enrolment, lost to follow-up (LTFU) and probability of retention, were assessed for both groups. Multivariable logistic regression (adjusted odds ratios, aOR) for enrolment and Poisson regression (adjusted incidence rate ratios, aIRR) for LTFU, were used. Cumulative NEP-retention probability was analysed using a six- and 12-month scenario.

At NEP enrolment, injection risk behaviours among WWID were associated with younger age; homelessny in intimate relationships, suggests ongoing HCV and HIV-infection risks. Subgroup-variation in the NEP continuum of care warrants more gender-disaggregated research and tailoring gender-sensitive services may improve prevention, health and retention outcomes.
Despite better NEP compliance among WWID, high injection and sexual risk behaviours in both gender-subgroups, especially in intimate relationships, suggests ongoing HCV and HIV-infection risks. Subgroup-variation in the NEP continuum of care warrants more gender-disaggregated research and tailoring gender-sensitive services may improve prevention, health and retention outcomes.
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