Category: Statistics

Carbon Balance Manag. 2023 Jul 14;18(1):13. doi: 10.1186/s13021-023-00232-2.

ABSTRACT

BACKGROUND: Understanding temporal trends and varying responses of water use efficiency (WUE) to environmental changes of diverse ecosystems is key to predicting vegetation growth. WUE dynamics of major ecosystem types (e.g., forest, grassland and cropland) have been studied using various WUE definitions/metrics, but a comparative study on WUE dynamics and their driving forces among different ecosystem types using multiple WUE metrics is lacking. We used eddy covariance measurements for 42 FLUXNET2015 sites (396 site years) from 1997 to 2014, as well as three commonly used WUE metrics (i.e., ecosystem, inherent, and underlying WUE) to investigate the commonalities and differences in WUE trends and driving factors among deciduous broadleaf forests (DBFs), evergreen needleleaf forests (ENFs), grasslands, and croplands.

RESULTS: Our results showed that the temporal trends of WUE were not statistically significant at 73.8% of the forest, grassland and cropland sites, and none of the three WUE metrics exhibited better performance than the others in quantifying WUE. Meanwhile, the trends observed for the three WUE metrics were not significantly different among forest, grassland and cropland ecosystems. In addition, WUE was mainly driven by atmospheric carbon dioxide concentration at sites with significant WUE trends, and by vapor pressure deficit (VPD) at sites without significant trends (except cropland).

CONCLUSIONS: Our findings revealed the commonalities and differences in the application of three WUE metrics in disparate ecosystems, and further highlighted the important effect of VPD on WUE change.

PMID:37450075 | DOI:10.1186/s13021-023-00232-2

Langenbecks Arch Surg. 2023 Jul 14;408(1):277. doi: 10.1007/s00423-023-03006-z.

ABSTRACT

PURPOSE: Sexual dysfunction after inguinal hernia complication is considered rare. However, its consequences impact on quality of life inevitably. Laparoscopic and open inguinal hernia repair may be comparable in terms of recurrent rate, overall complications, and chronic pain. Therefore, its complication is still questionable between these approaches. In this study, we compared sexual dysfunction and related complications between laparoscopic and open inguinal hernia repair.

METHODS: Systematic review and meta-analysis of randomized controlled trials (RCTs) studies were performed to compare laparoscopic and open inguinal hernia repair. Risk ratio (RR) and 95% confidence intervals (95% CI) were used as pooled effect size measures.

RESULT: Thirty RCTs (12,022 patients) were included. Overall, 6014 (50.02%) underwent laparoscopic hernia repair, and 6008 (49.98%) underwent open hernia repair. Laparoscopic approach provided non-significance benefit on pain during sexual activity (RR 0.57; 95% CI 0.18, 1.76), Vas deferens injury (RR 0.46; 95% CI 0.13, 1.63), orchitis (RR 0.84; CI 0.61,1.17), scrotal hematoma (RR 0.99; CI 0.62,1.60), and testicular atrophy (RR 0.46; CI 0.17,1.20). Meanwhile, the open inguinal hernia approach seems to perform better for cord seroma complications and testicular pain.

CONCLUSION: There is no advantage of laparoscopic inguinal hernia repair over an open approach concerning sexual dysfunction. On the contrary, there is an increasing risk of cord seroma after laparoscopic inguinal hernia repair with statistical significance.

PMID:37450061 | DOI:10.1007/s00423-023-03006-z

Int Immunopharmacol. 2023 Jul 11;122:110596. doi: 10.1016/j.intimp.2023.110596. Online ahead of print.

ABSTRACT

Corona Virus Disease 2019 (COVID-19) is an acute respiratory infection and a global public health event. The level of aβ₂GPI is significantly up-regulated in COVID-19 patients. The impact of inactivated vaccination against COVID-19 on aβ₂GPI and in vitro fertilization and embryo transfer (IVF-ET) remains unknown amidst the universal administration of COVID-19 vaccines. We conducted a retrospective study to assess the impact of COVID-19 inactivated vaccination on aβ₂GPI levels and its effect on superovulation and pregnancy outcomes. We found aβ₂GPI level is significantly up-regulated after vaccination. There was no statistical difference in mature egg rate, 2PN fertilization rate, day 3 high-quality embryo rate, blastocyst formation rate, embryo implantation rate and miscarriage rate between the vaccine group and control group. Our findings showed vaccination with COVID-19 inactivated vaccine can elevate the level of aβ₂GPI in peripheral blood but have no effect on the outcomes of controlled ovarian hyperstimulation and pregnancy in IVF-ET.

PMID:37441812 | DOI:10.1016/j.intimp.2023.110596

Death Stud. 2023 Jul 13:1-10. doi: 10.1080/07481187.2023.2231388. Online ahead of print.

ABSTRACT

The purpose of this study was to (1) explore associations between preparedness for caregiving and preparedness for death among family caregivers of patients with advanced cancer and (2) explore modifiable preparedness factors, such as communication and support. Data was derived from a baseline questionnaire collected in specialized home care. The questionnaire included socio-demographics, the Preparedness for Caregiving Scale, and single items addressing preparedness for death, received support and communication about incurable illness. Data was analyzed using descriptive statistics and Spearman correlations. Altogether 39 family caregivers participated. A significant association was found between preparedness for caregiving and preparedness for death. Received support and communication about the illness was associated with higher levels of preparedness for caregiving and death. This study contributes to evidence on the association between preparedness for caregiving and death, but also that communication and support employed by healthcare professionals could improve family caregiver preparedness and wellbeing.

PMID:37441803 | DOI:10.1080/07481187.2023.2231388

Obstet Gynecol. 2023 Jul 13. doi: 10.1097/AOG.0000000000005310. Online ahead of print.

ABSTRACT

OBJECTIVE: To assess the association between coronavirus disease 2019 (COVID-19) vaccination and female assisted reproduction outcomes through a systematic review and meta-analysis.

DATA SOURCES: We searched Medline (OVID), EMBASE, Web of Science, Cochrane Library, and ClinicalTrials.gov on January 11, 2023, for original articles on assisted reproduction outcomes after COVID-19 vaccination. The primary outcome was rates of clinical pregnancy; secondary outcomes included number of oocytes retrieved, number of mature oocytes retrieved, fertilization rate, implantation rate, ongoing pregnancy rate, and live-birth rate.

METHODS OF STUDY SELECTION: Two reviewers independently screened citations for relevance, extracted pertinent data, and rated study quality. Only peer-reviewed published studies were included.

TABULATION, INTEGRATION, AND RESULTS: Our query retrieved 216 citations, of which 25 were studies with original, relevant data. Nineteen studies reported embryo transfer outcomes, with a total of 4,899 vaccinated and 13,491 unvaccinated patients. Eighteen studies reported data on ovarian stimulation outcomes, with a total of 1,878 vaccinated and 3,174 unvaccinated patients. There were no statistically significant results among our pooled data for any of the primary or secondary outcomes: clinical pregnancy rate (odds ratio [OR] 0.94, 95% CI 0.88-1.01, P=.10), number of oocytes retrieved (mean difference -0.26, 95% CI -0.68 to 0.15, P=.21), number of mature oocytes retrieved (mean difference 0.31, 95% CI -0.14 to 0.75, P=.18), fertilization rate (OR 0.99, 95% CI 0.87-1.11, P=.83), implantation rate (OR 0.92, 95% CI 0.84-1.00, P=.06), ongoing pregnancy rate (OR 0.95, 95% CI 0.86-1.06, P=.40), or live-birth rate (OR 0.95, 95% CI 0.78-1.17, P=.63). A subanalysis based on country of origin and vaccine type was also performed for the primary and secondary outcomes and did not change the study results.

CONCLUSION: Vaccination against COVID-19 is not associated with different fertility outcomes in patients undergoing assisted reproductive technologies.

SYSTEMATIC REVIEW REGISTRATION: PROSPERO, CRD42023400023.

PMID:37441788 | DOI:10.1097/AOG.0000000000005310

J Chem Theory Comput. 2023 Jul 13. doi: 10.1021/acs.jctc.3c00285. Online ahead of print.

ABSTRACT

Many simulation methods concerning solvated molecules are based on the assumption that the solvated species and the solvent can be characterized by some representative structures of the solute and some embedding potential corresponding to this structure. While the averaging of the solvent configurations to obtain an embedding potential has been studied in great detail, this hinges on a single solute structure representation. This assumption is re-examined and generalized for conformationally flexible solutes and tested on 4 nonrigid systems. In this generalized approach, the solute is characterized by a set of representative structures and the corresponding embedding potentials. The representative structures are identified by means of subdividing the statistical ensemble, which in this work is generated by a constant-temperature molecular dynamics simulation. The embedding potential defined in the Frozen-Density Embedding Theory is used to characterize the average effect of the solvent in each subensemble. The numerical examples concern the vertical excitation energies of protonated retinal Schiff bases in protein environments. It is comprehensively shown that subensemble averaging leads to huge computational savings compared with explicit averaging of the excitation energies in the whole ensemble while introducing only minor errors in the case of the systems examined.

PMID:37441785 | DOI:10.1021/acs.jctc.3c00285

J Glob Health. 2023 Jul 14;13:06026. doi: 10.7189/jogh.13.06026.

ABSTRACT

BACKGROUND: The coronavirus (COVID-19) pandemic caused enormous adverse socioeconomic impacts worldwide. Evidence suggests that the diagnostic accuracy of clinical features of COVID-19 may vary among different populations.

METHODS: We conducted a systematic review and meta-analysis of studies from PubMed, Embase, Cochrane Library, Google Scholar, and the WHO Global Health Library for studies evaluating the accuracy of clinical features to predict and prognosticate COVID-19. We used the National Institutes of Health Quality Assessment Tool to evaluate the risk of bias, and the random-effects approach to obtain pooled prevalence, sensitivity, specificity, and likelihood ratios.

RESULTS: Among the 189 included studies (53 659 patients), fever, cough, diarrhoea, dyspnoea, and fatigue were the most reported predictors. In the later stage of the pandemic, the sensitivity in predicting COVID-19 of fever and cough decreased, while the sensitivity of other symptoms, including sputum production, sore throat, myalgia, fatigue, dyspnoea, headache, and diarrhoea, increased. A combination of fever, cough, fatigue, hypertension, and diabetes mellitus increases the odds of having a COVID-19 diagnosis in patients with a positive test (positive likelihood ratio (PLR) = 3.06)) and decreases the odds in those with a negative test (negative likelihood ratio (NLR) = 0.59)). A combination of fever, cough, sputum production, myalgia, fatigue, and dyspnea had a PLR = 10.44 and an NLR = 0.16 in predicting severe COVID-19. Further updating the umbrella review (1092 studies, including 3 342 969 patients) revealed the different prevalence of symptoms in different stages of the pandemic.

CONCLUSIONS: Understanding the possible different distributions of predictors is essential for screening for potential COVID-19 infection and severe outcomes. Understanding that the prevalence of symptoms may change with time is important to developing a prediction model.

PMID:37441773 | DOI:10.7189/jogh.13.06026

Fam Med. 2023 Jul 10. doi: 10.22454/FamMed.2023.996183. Online ahead of print.

ABSTRACT

BACKGROUND AND OBJECTIVES: In Canada, competency-based medical education prepares family medicine (FM) graduates to provide a broad scope of practice (SoP). We compared the practice intentions of FM residents at the end of training with actual practice patterns of early career family physicians (FPs) for SoP activities reflective of comprehensive family medicine.

METHODS: We collected self-reported data from cross-sectional family medicine longitudinal surveys for exiting FM residents in 2015 and 2016 and from a separate cohort of FPs who were 3 years into practice in 2018 and 2019 from 15 programs. We measured outcomes from exiting FM residents intending to participate in SoP activities and FPs participating in 15 SoP domains of family medicine.

RESULTS: A total of 1,409 exiting FM residents (58.2% response rate) and 523 early career FPs (21% response rate) responded to the surveys. A high correlation existed between the percentage of exiting residents who intended to participate in each SoP activity and the percentage of FPs who participated in those activities (r 2=0.95). However, we found statistically significant declines in the percentage of FPs reporting involvement in the SoP activities compared to their reported practice intentions for 14 of the 15 domains. We saw the greatest declines in providing care in long-term care facilities, rural communities, emergency departments, intrapartum care, and care for Indigenous populations (P<.001).

CONCLUSIONS: While SoP patterns are highly correlated with practice intentions, early-career FPs are less likely to provide care as intended for all SoP activities. Further research is needed on the factors influencing practice patterns in specific areas to determine how FP graduates can be supported to provide comprehensive care.

PMID:37441758 | DOI:10.22454/FamMed.2023.996183

Cir Cir. 2023;91(3):375-380. doi: 10.24875/CIRU.22000564.

ABSTRACT

BACKGROUND: COVID-19 pandemic had a negative impact on colorectal cancer (CRC) screening programs.

OBJECTIVE: The care strategy was modified throughout the pandemic, this paper evaluates its impact and short-term consequences.

METHODS: A retrospective, descriptive and cross-sectional study was carried out in a private ambulatory endoscopic center, in average risk subjects. The study compared two periods: pre-pandemic and pandemic (subdivided into pre-vaccination and vaccination).

RESULTS: During this period, 54.4% of scheduled colonoscopies were due to the screening program. The average age was 60.4 ± 7 years. Women were 52.0%. The overall cancellation rate was 41.1%, higher during pre-vaccination period. There were no differences in the degree of colonic cleansing, colonoscope exit time, and patient satisfaction. The adenoma detection rate (38.4% vs. 42.8% vs. 36.4%; p = 0.8) and the total number of adenomas (p = 0.02) was statistically significant during the pre-vaccination period. The rate of adenoma/patient showed a higher trend during this period (p = 0.06). The number of colorectal cancers was 10, without differences between periods.

CONCLUSION: In conclusion, the impact of the decrease in screening colonoscopy procedures for CRC detection was similar to what was seen worldwide. In this period no increase in cancer cases, although this effect may be observed in the long term.

PMID:37441724 | DOI:10.24875/CIRU.22000564