-
Mashup Score: 29
Background Clinical prediction models should be validated before implementation in clinical practice. But is favorable performance at internal validation or one external validation sufficient to claim that a prediction model works well in the intended clinical context? Main body We argue to the contrary because (1) patient populations vary, (2) measurement procedures vary, and (3) populations and measurements change over time. Hence, we have to expect heterogeneity in model performance between locations and settings, and across time. It follows that prediction models are never truly validated. This does not imply that validation is not important. Rather, the current focus on developing new models should shift to a focus on more extensive, well-conducted, and well-reported validation studies of promising models. Conclusion Principled validation strategies are needed to understand and quantify heterogeneity, monitor performance over time, and update prediction models when appropriate. Su
Source: bmcmedicine.biomedcentral.comCategories: General Medicine NewsTweet
-
Mashup Score: 7
Background Exposure to general anesthetics (GA) in early childhood is associated with developmental disorders. However, few studies have addressed in-utero exposure to anesthetics during delivery and subsequent developmental disorders in the offspring. This study aimed to investigate whether GA for cesarean delivery is associated with developmental disorders in children. Methods Using data retrieved from the National Health Insurance Research Database linked to the Birth Reporting Database and the Maternal and Child Health Database between 2015 and 2020, this nationwide retrospective cohort study compared the incidence of developmental disorders following cesarean delivery under GA with that under neuraxial anesthesia (NA). Developmental disorders were diagnosed using the corresponding International Classification of Diseases codes traced 2–6 years after delivery. Results After excluding twins, children born with congenital anomalies or diseases and those with missing data, 325,309 eli
Source: bmcmedicine.biomedcentral.comCategories: General Medicine NewsTweet
-
Mashup Score: 4Heterogeneous treatment effects of stress ulcer prophylaxis among ICU patients at risk for gastrointestinal bleeding - BMC Medicine - 11 day(s) ago
Background While randomized clinical trials of stress ulcer prophylaxis (SUP) have generally shown no overall benefit, subgroup analyses suggest the benefit or harm of SUP in specific patients, indicating heterogeneity of treatment effects (HTE). Understanding HTE is crucial for tailoring SUP to individual treatment. Methods This cohort study included patients admitted to intensive care unit (ICU) with at least one risk factor for clinically important gastrointestinal bleeding (GIB). The primary exposure was the use of SUP within 48 h after ICU entry; the primary outcome was 28-day mortality. We employed conventional subgroup analysis, risk-based analysis, and effect-based analysis to explore the HTE of SUP. Results A total of 25,475 patients were included, of whom 6199 (24.3%) received SUP, with famotidine being the most commonly prescribed (53.7%). Baseline characteristics were well-balanced between treatment groups after weighting. SUP was not associated with the 28-day mortality in
Source: bmcmedicine.biomedcentral.comCategories: General Medicine NewsTweet
-
Mashup Score: 3Minimum and optimal combined variations in sleep, physical activity, and nutrition in relation to all-cause mortality risk - BMC Medicine - 14 day(s) ago
Background Sleep, physical activity, and nutrition (SPAN) are critical behaviours for health, although they have traditionally been studied separately. We examined the combined associations of SPAN and the minimum between-individual variations associated with meaningfully lower all-cause mortality risk. Methods This prospective cohort analysis included 59,078 participants from the UK Biobank (median age: 64.0 years; 45.4% male) who wore trackers for 7 days and self-reported dietary data. Wearable-measured sleep (hours/day) and moderate to vigorous physical activity (MVPA; mins/day) were calculated using a machine learning based schema. A 10-item diet quality score (DQS) assessed the intake of vegetables, fruits, fish, dairy, whole grains, vegetable oils, refined grains, processed and unprocessed meats, and sugary beverages (0–100 for all components with higher values indicating higher quality). Cox proportional hazards models were used to estimate hazard ratios (HR) for all-cause morta
Source: bmcmedicine.biomedcentral.comCategories: General Medicine NewsTweet
-
Mashup Score: 1Therapeutic hypothermia in patients with acute myocardial infarction complicated by out-of-hospital cardiac arrest - BMC Medicine - 19 day(s) ago
Background There is a lack of data regarding outcomes of therapeutic hypothermia in patients with acute myocardial infarction (AMI) complicated by out-of-hospital cardiac arrest (OHCA). This study aimed to evaluate the effect of therapeutic hypothermia on clinical outcomes in comatose patients after percutaneous coronary intervention (PCI) for AMI following OHCA. Methods Using a prospective nationwide registry from 2016 to 2021, we selected 2925 patients with AMI who underwent emergency PCI among 182,508 OHCA cases. These patients were divided into groups receiving hypothermia treatment (n = 624) and those not receiving hypothermia treatment (n = 2301). The primary endpoint was in-hospital mortality, and secondary endpoints were mortality rate at 24 h and neurological outcomes at discharge. Results The hypothermia group showed a significantly lower rate of in-hospital mortality than the non-hypothermia group (odds ratio [OR] 0.71; 95% confidence interval [CI], 0.59–0.85; P < 0.001). Ho
Source: bmcmedicine.biomedcentral.comCategories: General Medicine NewsTweet
-
Mashup Score: 0Cilnidipine exerts antiviral effects in vitro and in vivo by inhibiting the internalization and fusion of influenza A virus - BMC Medicine - 26 day(s) ago
Background Influenza A virus (IAV) is a major cause of seasonal and global pandemics, posing serious health risks. Repositioning approved drugs offers an efficient antiviral strategy, particularly as calcium (Ca2⁺) is crucial for IAV infection, making Ca2⁺ channel blockers (CCBs) promising candidates for antiviral agents. Methods The in vitro antiviral activity of cilnidipine was evaluated using MTT assays, qRT-PCR, plaque assays, and western blotting. Mechanistic studies involved time-of-addition, viral internalization, pseudovirus neutralization, and HA (hemagglutinin) syncytium assays. For in vivo analysis, BALB/c mice were intranasally infected to evaluate the effects of cilnidipine on viral titer, lung index, pulmonary inflammatory mediators, and survival rate. Results In vitro, cilnidipine exhibits antiviral activity against IAV during the early stages of infection. It disrupts clathrin- and caveolin-mediated endocytosis to inhibit the internalization of IAV and interacts with th
Source: bmcmedicine.biomedcentral.comCategories: General Medicine News, Infectious DiseaseTweet
-
Mashup Score: 1Therapeutic hypothermia in patients with acute myocardial infarction complicated by out-of-hospital cardiac arrest - BMC Medicine - 27 day(s) ago
Background There is a lack of data regarding outcomes of therapeutic hypothermia in patients with acute myocardial infarction (AMI) complicated by out-of-hospital cardiac arrest (OHCA). This study aimed to evaluate the effect of therapeutic hypothermia on clinical outcomes in comatose patients after percutaneous coronary intervention (PCI) for AMI following OHCA. Methods Using a prospective nationwide registry from 2016 to 2021, we selected 2925 patients with AMI who underwent emergency PCI among 182,508 OHCA cases. These patients were divided into groups receiving hypothermia treatment (n = 624) and those not receiving hypothermia treatment (n = 2301). The primary endpoint was in-hospital mortality, and secondary endpoints were mortality rate at 24 h and neurological outcomes at discharge. Results The hypothermia group showed a significantly lower rate of in-hospital mortality than the non-hypothermia group (odds ratio [OR] 0.71; 95% confidence interval [CI], 0.59–0.85; P < 0.001). Ho
Source: bmcmedicine.biomedcentral.comCategories: General Medicine NewsTweet
-
Mashup Score: 1
Background Exposure to general anesthetics (GA) in early childhood is associated with developmental disorders. However, few studies have addressed in-utero exposure to anesthetics during delivery and subsequent developmental disorders in the offspring. This study aimed to investigate whether GA for cesarean delivery is associated with developmental disorders in children. Methods Using data retrieved from the National Health Insurance Research Database linked to the Birth Reporting Database and the Maternal and Child Health Database between 2015 and 2020, this nationwide retrospective cohort study compared the incidence of developmental disorders following cesarean delivery under GA with that under neuraxial anesthesia (NA). Developmental disorders were diagnosed using the corresponding International Classification of Diseases codes traced 2–6 years after delivery. Results After excluding twins, children born with congenital anomalies or diseases and those with missing data, 325,309 eli
Source: bmcmedicine.biomedcentral.comCategories: General Medicine NewsTweet
-
Mashup Score: 1
Background Exposure to general anesthetics (GA) in early childhood is associated with developmental disorders. However, few studies have addressed in-utero exposure to anesthetics during delivery and subsequent developmental disorders in the offspring. This study aimed to investigate whether GA for cesarean delivery is associated with developmental disorders in children. Methods Using data retrieved from the National Health Insurance Research Database linked to the Birth Reporting Database and the Maternal and Child Health Database between 2015 and 2020, this nationwide retrospective cohort study compared the incidence of developmental disorders following cesarean delivery under GA with that under neuraxial anesthesia (NA). Developmental disorders were diagnosed using the corresponding International Classification of Diseases codes traced 2–6 years after delivery. Results After excluding twins, children born with congenital anomalies or diseases and those with missing data, 325,309 eli
Source: bmcmedicine.biomedcentral.comCategories: General Medicine News, General HCPsTweet
-
Mashup Score: 2
Background Cervical cancer (CC), primarily caused by human papillomavirus (HPV) infection, remains a significant global health concern. We aimed to comprehensively investigate the epidemiological status of HPV in China. Methods Data from 2,728,321 women undergoing routine cervical examinations at 2127 medical institutions nationwide from January 2017 to June 2023 were analyzed. HPV genotype testing was conducted using HPV DNA typing kits. Results The overall HPV prevalence was 17.70%, with 13.12% classified as high-risk HPV (HR-HPV) and 4.58% as low-risk HPV (LR-HPV). Notably, HPV52 emerged as the most common carcinogenic type, followed by HPV58 and HPV16. Age-specific prevalence revealed a bimodal distribution, with peaks observed in women under 21 and over 61 years of age. Geographically, the south (19.48%) exhibited the highest infection rate, while the northwest (12.36%) had the lowest. Furthermore, HPV infection rates were higher during winter and spring. Although HPV infection ra
Source: bmcmedicine.biomedcentral.comCategories: General Medicine News, General HCPsTweet
RT @MaartenvSmeden: Kind reminder. There is no such thing as a validated prediction model https://t.co/nDVROL5QRQ