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A woman's place: unpaid work in the home.

Household work has only recently become a valid topic of study. Feminist scholars were among the first social scientists to draw attention to women's unpaid work in the home. Although household work occupations are frequently used for assessment and treatment within practice, occupational therapy literature demonstrates a paucity in the area of these occupations. This review of the feminist literature summarizes theory and research that explore the historical, political, social, and personal meanings of household work. Feminist analysis of household work may sensitize occupational therapists to the complex interactions of these meanings and lead them to the realization that women's responsibility for unpaid work in the home may have repercussions in the daily lives of both women and men.

Attitude of Health Personnel

Experimental validation of self-instructional modules on the topic of donor phlebotomy.

This validation study investigated the effectiveness of an instructional unit on the topic of donor phlebotomy. The unit consisting of 3 modules based on a videotape and 3 booklets covered (1) donor selection, (2) donor arm preparation, (3) donor phlebotomy. A separate-sample pretest-post-test design was used. All 3 modules were found to be instructionally effective as measured by objective referenced tests. Student appraisal data also was collected for the purpose of revising and improving these materials.

Bloodletting

Methods for defining equity-stratifying variables: a systematic review of validation studies.

BACKGROUND AND OBJECTIVE: Disease burden is often disproportionally higher among those who are socially disadvantaged by factors defined in the PROGRESS-Plus framework (ie, Place of residence, Race/ethnicity/culture/language, Occupation, Gender/sex, Religion, Education, Socioeconomic status, and Social capital, with "Plus" covering features like age and disability). The accuracy and applicability of case definitions to identify these variables from administrative and clinical health data are unknown. We conducted a systematic review to explore how equity-stratifying variables, as categorized by the PROGRESS-Plus framework, have been defined and validated in epidemiologic studies using administrative health, population-level, or electronic health record (EHR) data. METHODS: Medline, EMBASE, CINAHL, Web of Science, and Google Scholar were searched from the inception of the databases to 2024 for validation studies of equity-stratifying variables in adults using administrative health datasets, health registries, or EHR data. Titles and abstracts, followed by relevant full-text articles, were screened in duplicate by two reviewers for eligibility. The data sources utilized, algorithms employed, and their associated performance measures were extracted and synthesized from included studies. Given substantial heterogeneity in study design, equity-stratifying variable definition, and performance metrics, meta-analysis was not possible. RESULTS: Of the 9099 unique citations screened, 188 full texts were reviewed and 116 were included in this review. Most studies were published between 2019 and 2024 (n = 64, 55%) and were validation studies of race/ethnicity definitions that used race/ethnicity codes or surname list algorithms (n = 66, 57%). No studies examined religion. Regarding the reported performance measure estimates, the race/ethnicity/culture/language equity-stratifying variables category had the largest variability across sensitivity, positive predictive value (PPV), and Cohen's Kappa. Occupation validation studies had the lowest variation in sensitivity and PPV. CONCLUSION: Despite an increasing number of publications reporting on the validation of equity-stratifying variables relevant to the PROGRESS-Plus framework, performance measures varied widely across studies. The significant heterogeneity in equity-stratifying variable definitions and methods used to validate them support the need for further rigorous validation of equity-stratifying variables in administrative and clinical health data. PLAIN LANGUAGE SUMMARY: Disease burden is often higher in people who experience financial hardships, lower level of education, discrimination due to race/ethnicity, and unstable housing. These social factors can be considered health equity factors and are important for understanding health inequalities. Health researchers often use large datasets, such as hospital or electronic health records (EHRs), to study these health equity factors. However, it is not clear how accurately these data sources capture information about people's social circumstances and how these factors are defined. In this study, we reviewed existing research to understand how health equity factors have been defined across health data sources and how accurate they are at measuring aspects of health equity and social disadvantage. Of the more than 9000 studies we identified, we included 116 that met our criteria for this systematic review. Most included studies focused on identifying race and ethnicity, often using codes or surname-based methods. We found that the accuracy of these methods varied widely across studies, meaning results may not always be reliable or comparable. Overall, our findings show that there are inconsistencies in how social factors are defined and measured in health data. This makes it difficult to fully understand and address health inequalities using routinely collected health data. More work is needed to develop and validate better quality and more consistent methods for capturing these important social factors.

Humans

The identification of novel potential injury mechanisms and candidate biomarkers in renal allograft rejection by quantitative proteomics.

Early transplant dysfunction and failure because of immunological and nonimmunological factors still presents a significant clinical problem for transplant recipients. A critical unmet need is the noninvasive detection and prediction of immune injury such that acute injury can be reversed by proactive immunosuppression titration. In this study, we used iTRAQ -based proteomic discovery and targeted ELISA validation to discover and validate candidate urine protein biomarkers from 262 renal allograft recipients with biopsy-confirmed allograft injury. Urine samples were randomly split into a training set of 108 patients and an independent validation set of 154 patients, which comprised the clinical biopsy-confirmed phenotypes of acute rejection (AR) (n = 74), stable graft (STA) (n = 74), chronic allograft injury (CAI) (n = 58), BK virus nephritis (BKVN) (n = 38), nephrotic syndrome (NS) (n = 8), and healthy, normal control (HC) (n = 10). A total of 389 proteins were measured that displayed differential abundances across urine specimens of the injury types (p < 0.05) with a significant finding that SUMO2 (small ubiquitin-related modifier 2) was identified as a "hub" protein for graft injury irrespective of causation. Sixty-nine urine proteins had differences in abundance (p < 0.01) in AR compared with stable graft, of which 12 proteins were up-regulated in AR with a mean fold increase of 2.8. Nine urine proteins were highly specific for AR because of their significant differences (p < 0.01; fold increase >1.5) from all other transplant categories (HLA class II protein HLA-DRB1, KRT14, HIST1H4B, FGG, ACTB, FGB, FGA, KRT7, DPP4). Increased levels of three of these proteins, fibrinogen beta (FGB; p = 0.04), fibrinogen gamma (FGG; p = 0.03), and HLA DRB1 (p = 0.003) were validated by ELISA in AR using an independent sample set. The fibrinogen proteins further segregated AR from BK virus nephritis (FGB p = 0.03, FGG p = 0.02), a finding that supports the utility of monitoring these urinary proteins for the specific and sensitive noninvasive diagnosis of acute renal allograft rejection.

Acute Kidney Injury

Validating audiovisual reviews as a strategy for teaching behavioral medicine to primary care residents.

A study examining the usefulness of audiovisual reviews (AVR's) as a method of teaching behavioral medicine was done with family medicine residents and faculty at the UNC School of Medicine. A set of educational goals for family medicine residency training was established. In a survey faculty and residents were asked to rate the importance of teaching each goal during residency and the appropriateness of AVR's for teaching it. Observers recorded the content of discussion in 18 regularly scheduled AVR's. In survey results both faculty and residents agreed that AVR's are best suited for teaching behavioral medicine skills. However, there were different goals, depending on level of training. Content analysis of the observed AVR's showed that the four most valued teaching goals comprised 50% of the topics discussed in actual AVR's. Results of this study validate the use of AVR's as a teaching strategy for behavioral medicine skills.

Audiovisual Aids

Analysis of urinary stones by computerized infrared spectroscopy.

The computerized assessment of infrared spectra of urinary stones with existing programmes such as SEARCH (Lehmann, C. A. et al. (1988) Clin. Chim. Acta 173, 107-116), TWIN or CIRCOM (Hesse, A. et al. (1988) Fresenius Z. Anal. Chem. 330, 372-373) has proved to be unreliable when used for routine urinary stone analysis. A more refined method has to be used in place of simple comparison algorithms. STONES is a new programme for computerized analysis of urinary stones developed with the intention of simulating the former non-computerized analysis procedure. STONES is a rule-based system, which interprets the infrared spectra qualitatively by its rules. A quantitative result is obtained by means of library search. Combining these two methods 93% of the tests were correct with regard to clinical relevance.

Evaluation Studies as Topic

Artificial intelligence-based tumour infiltrating lymphocyte quantification in patients with triple-negative breast cancer: an independent validation study.

BACKGROUND: Tumour-infiltrating lymphocytes (TILs) are a robust prognostic marker in patients with triple-negative breast cancer. Artificial intelligence (AI)-derived computational tools assessing TILs could improve efficiency, but require independent validation against clinical outcomes. We aimed to compare the prognostic performance of AI-derived TIL scores with pathologist-scored TILs in a large, prospectively collected dataset pooled from randomised controlled trials. METHODS: CATALINA was an independent, external validation study using prospectively collected long-term clinical outcome data pooled from seven randomised clinical trials conducted at multiple sites. We independently evaluated two previously validated AI pipelines that generate five computationally assessed tumour-infiltrating lymphocyte (cTIL) scores by masked, independent deployment of locked models. cTIL scores were correlated with the mean of the pathologist-scored stromal TILs (sTILs) in 220 digitised haematoxylin and eosin whole slide images in a cohort of patients with early-stage triple-negative or HER-2 positive breast cancer, previously scored by trained pathologists in a TIL-reproducibility study. Prognostic performance was assessed in a separate cohort of patients with early triple-negative breast cancer pooled from seven prospective, randomised adjuvant trials. Multivariable Cox regression models adjusted for clinicopathological factors and study heterogeneity assessed associations of cTIL score and sTIL score with invasive disease-free survival, distant disease-free survival, and overall survival. 5-year discrimination was estimated using time-dependent area under the receiver operating characteristic curve (AUC). FINDINGS: Individual data were collated from 1759 patients, of whom 1356 had complete clinicopathological data, pathologist sTIL scores, and cTIL scores available. Modest correlation (r 0&#xb7;375-0&#xb7;473) was observed between cTIL scores and the mean pathologist sTIL score. Both sTIL and cTIL were independently associated with 5-year invasive disease-free survival, distant disease-free survival, and overall survival after adjustment for clinicopathological factors (hazard ratio for invasive disease-free survival was 0&#xb7;73 [95% CI 0&#xb7;66-0&#xb7;82]; q<0&#xb7;0001, distant disease-free survival was 0&#xb7;70 [0&#xb7;61-0&#xb7;79]; q<0&#xb7;0001, and overall survival was 0&#xb7;72 [0&#xb7;63-0&#xb7;82]; q<0&#xb7;0001 for sTIL scores and 0&#xb7;80 [0&#xb7;73-0&#xb7;89]; q<0&#xb7;0001, 0&#xb7;77 [0&#xb7;69-0&#xb7;86]; q<0&#xb7;0001, and 0&#xb7;79 [0&#xb7;70-0&#xb7;88]; q=0&#xb7;0002, respectively, for percentage_lymphocyte scores). In models adjusted for clinicopathological variables and sTIL score, cTIL score did not maintain a statistically significant prognostic association. Both sTIL and cTIL scores improved the 5-year AUC over clinicopathological variables alone, while cTIL score did not significantly further improve AUC when combined with clinicopathological variables and sTIL score. INTERPRETATION: Two cTIL models deployed entirely without retraining or modification provided statistically significant prognostic information and improved risk discrimination compared with clinicopathological variables alone in this large, platform-based, independent validation study. Although cTIL score did not incrementally improve prognostication compared with models combining clinicopathological variables with sTIL score, these findings support the application of cTILs as a reproducible prognostic biomarker, particularly in settings where routine or widespread pathologist assessment is unavailable. FUNDING: Breast Cancer Research Foundation (USA).

Humans

Short-term effects of topical 17 beta-oestradiol on human post-menopausal skin.

Early studies performed between 1946 and 1952 reported that cutaneously applied oestrogens had local effects in spite of probable systemic absorption. In order to test the validity of these observations the epidermal effects of topically applied 17 beta-oestradiol (E2) of 8 post-menopausal women were studied in a double-blind placebo-controlled cross-over study using non-invasive bioengineering techniques. E2 or placebo was applied twice daily for 45-50 days in a gel (at concentrations of 0.1 mg/g and 1.0 mg/g) and the results were compared. Changes in epidermal hydration (electrical capacitance and conductance) and mechanical properties were studied. We were unable to confirm the short-term local oestrogenic effects on post-menopausal human skin reported in the earlier studies. Thus, in spite of its high number of oestrogen receptors, the epidermis does not appear to be a target organ for oestrogens under clinical conditions.

Administration, Topical

Antidotes to vesicant chemotherapy extravasations.

The foregoing sections have reviewed the experimental studies and clinical anecdotes describing potential pharmacologic antidotes to extravasations of vesicant anticancer agents. Numerous prior reviews have also suggested specific antidotes or very conservative, non-pharmacologic approaches. Many antidotal approaches to extravasation have not been experimentally validated and thus, few 'antidotes' share a rationale which is founded on positive experimental and clinical studies. However, using this criteria, a few active antidotes can be distilled from the literature. These are outlined in Table 6. These antidotes include isotonic (1/6 M) sodium thiosulfate for mechlorethamine (and optionally for cisplatin), hyaluronidase for the vinca alkaloids (and optionally for epipodophyllotoxins such as etoposide), and cooling with very topical DMSO and low dose hydrocortisone for the anthracyclines. For the alkylating agent mitomycin C, topical DMSO has been effective experimentally but has not yet received clinical validation, at least in published studies. Nonetheless, the severity of mitomycin C ulcerations and the documented safety of topical DMSO in the small series of doxorubicin extravasation patients argues for its use when mitomycin extravasates in the clinic. Furthermore, except for DMSO, all of these extravasation antidotes are listed in the official FDA-approved package inserts for each vesicant agent. Thus, the inserts for vincristine and vinblastine specify hyaluronidase, for doxorubicin, glucocorticosteroids, and for mechlorethamine, sodium thiosulfate. New studies are clearly needed to clarify the role of topical DMSO with anthracyclines and mitomycin C. In addition, efforts should be made to begin clinical development of radical dimers such as DHM3 which can directly inactivate quinone-containing vesicants like doxorubicin and mitomycin C. Although the incidence of chemotherapy extravasation may be lessened with vascular access devices, it nonetheless, continues to comprise a serious and highly litigious area of oncology practice. This commands continued extravasation intervention studies and diligent prevention when ever possible.

Animals

Simultaneous determination of imiquimod and terbinafine in skin permeation studies: Validation of a liquid chromatography method with fluorescence detection.

Chromoblastomycosis is a chronic, neglected subcutaneous mycosis posing significant therapeutic challenges. A topical strategy combining terbinafine (TBF), an antifungal, with imiquimod (IMQ), a TLR-7/8 agonist immunomodulator, has emerged a promising alternative. However, no validated analytical method is currently available to simultaneously quantify both drugs in skin, which is crucial for novel formulation development. This study reports the development and validation of a simple HPLC method with fluorescence detection (excitation 236&#xa0;nm, emission 340&#xa0;nm) for the simultaneous determination of TBF and IMQ extracted from porcine skin. Separation was achieved on a C8 reversed-phase column (125&#xa0;&#xd7;&#xa0;4.0&#xa0;mm, 5&#xa0;&#x3bc;m) using a mobile phase of methanol and water (60,40, v/v), both containing 0.1% formic acid at a flow rate of 0.8&#xa0;mL/min. The method showed excellent linearity (r&#xa0;>&#xa0;0.999) over 0.01-1.0&#xa0;&#x3bc;g/mL for IMQ and 0.1-2.0&#xa0;&#x3bc;g/mL for TBF. Intra- and inter-day precision demonstrated coefficients of variation below 5%, and recovery rates from skin (79-105%) confirmed accuracy. Limits of detection were 0.001&#xa0;&#x3bc;g/mL for IMQ and 0.004&#xa0;&#x3bc;g/mL for TBF, with quantification limits of 0.02&#xa0;&#x3bc;g/mL and 0.16&#xa0;&#x3bc;g/mL, respectively. This selective, sensitive, and reproducible method represents a valuable analytical tool for supporting the development and quality control of topical formulations for chromoblastomycosis and other fungal skin diseases.

Animals

EndoCyte, an interactive computer program for quantitative analysis of receptor-mediated endocytosis.

We present EndoCyte, a user friendly interactive program for quantitative analysis of receptor-mediated endocytosis. The data, comprised of time-dependent concentrations of the ligand at the cell surface and the ligand internalized by cells, are analyzed by the application of a set of nested mathematical models of endocytosis. EndoCyte reduces data to parameters conventional in description of receptor-mediated endocytosis and a parameter which describes the non-linear effects. The performance of EndoCyte is documented by the analysis of applications to synthetic data.

Computer Simulation

The Canadian Cardiovascular Society grading scale for angina pectoris: is it time for refinements?

OBJECTIVE: To appraise the measurement properties of the Canadian Cardiovascular Society (CCS) classification of stable angina pectoris. DATA SOURCES: Relevant articles were identified through a MEDLINE search (1976 to November 1991). Bibliographies of retrieved articles were also reviewed. STUDY SELECTION: Studies chosen directly addressed the validity and reliability of the CCS scale. Recent studies and reviews of related topics (for example, silent ischemia) are selectively cited. DATA SYNTHESIS: No data address the scale's applicability, that is, how clinicians typically assign angina grades in practice. Comprehensiveness would be improved by coverage of the patient's perceptions of symptom burden; mixed exertional and rest symptoms; episodic or changing symptoms; and modifying factors. Reliability was assessed in one study with two clinicians; the interobserver, chance-corrected agreement on patient grading was 60%. Content validity (the ability of the scale to measure what it claims) is threatened by the unproven assumption of symptomatic or physiologic equivalence among diverse levels of different activities within any given grade of angina. Construct validity is uncertain, given weak relations between angina grade and noninvasive markers of ischemia, anatomical disease, or prognosis. The scale's responsiveness (the ability to detect the smallest clinically important changes) is limited by the reliance on four coarse gradations based on only ambulation or stair-climbing. CONCLUSIONS: The CCS scale for stable angina might be made more useful by developing measurements for patients' self-rated symptom burden and the changes they deem important; by adding items on clinical instability (that is, progressive symptoms or pain at rest); and by empirically testing the current scale to eliminate redundant or inconsistent elements.

Angina Pectoris

Student awareness of research findings.

One problem faced by all faculty who teach research to undergraduate students is how to make the topic of utilization of research both interesting and practical. The author describes an approach that elicited students' active participation in replicating an earlier study by indicating their awareness of research-validated practices. Involvement of the students in an actual study seems a positive way to introduce the topic of utilization and has been used with success in one program over the past 4 years.

Attitude

Clinical evaluation of an automatic sensitivity adjustment feature in a dual chamber pacemaker.

The clinical evaluation of a new automatic sensitivity adjustment feature in the Cosmos II, Model #284-05 is described. This feature, designed to maintain a 2:1 safety margin for sensing intrinsic signals, was activated by way of special programmer software in ten patients at two centers. While the feature worked satisfactorily in some cases, it did not perform as expected, and undersensing in both chambers was observed. This may have been due to biasing the adjustment toward maximum rather than minimum electrograms. This study suggested that electrograms may vary by more than 100% which underscores the importance of this feature, and reinforces the need for continued development.

Algorithms

A scanning system for digital analysis of cineangiography films.

A system for scanning and digital analysis of cinefilms is presented and its performance is compared with entirely digital radiographic equipment. Apart from the difference between logarithmic and linear gray-scale representation, a higher noise level was found in the scanning system. When its spatial resolution was assessed visually, it was comparable to that of the digital system, although lower than when the cinefilming and scanning steps were evaluated separately. Algorithms for the correction of varying exposure and geometric ("pin-cushion") distortion are also presented. It is concluded that digital analysis after scanning of cinefilms can be a useful alternative to completely digital cineradiographic studies.

Algorithms

The finite dose technique as a valid in vitro model for the study of percutaneous absorption in man.

An in vitro model of percutaneous absorption has been developed which permits close stimulation of conditions commonly associated with topical drug use in living man. Quantitative comparison of the absorption of selected compounds in the model and in living man was made to test the validity of the model. Excellent agreement has been found between the two sets of data, both with respect to the total amount absorbed and the kinetics of absorption.

Aspirin

[Critical aspects of an outside evaluation of postoperative pain in infants. A placebo-controlled double-blind study of the question of the reliability and validity of the measurement system].

Postoperative analgesia in infants and young children is a topic of growing interest in pediatric anesthesia. Two systems measuring postoperative pain in this group of patients have been offered recently: CHEOPS (Childrens Hospital of Eastern Ontario Pain Scale) by McGrath et al. and OPS (Objective Pain Scale) by Hannallah et al. and Broadman et al. [3, 7, 8]. Both systems are economical and not reactive, but their validity is not satisfying. The validity of CHEOPS is based on the statements of experienced nurses, using the method of convergent validation by an expert's assertion. Hannallah and Broadman et al. judged the validity of their objective pain scale for infants and young children by statements of juveniles between 13 and 18 years of age. McGrath et al. accepted the item of spontaneous verbal communication as useful in the CHEOPS, although no such verbal comment occurred in their study on interrater and inter-item correlations. The aim of the present study was to evaluate the statistical qualification of items for measurements of the intensity of postoperative pain in young children and to investigate some aspects of their validity. MATERIAL AND METHODS. The study was performed in 54 children of ASA groups I and II aged 29.2 +/- 10.7 months. They were included in the study if they were pain-free before the operation and had no signs and symptoms of neurologic disease. The following operations were accepted: herniorrhapy, orchidopexy, circumcision, and umbilical herniorrhaphy. Premedication and general anesthesia were standardized. The patients were premedicated with midazolam 0.5 mg/kg rectally and subsequent intramuscular injections of ketamine 2.0 mg/kg with atropine 0.01 mg/kg. Anesthesia was induced and maintained by inhalation of oxygen/nitrous oxide and halothane (FiO2 0.3). All children were intubated and ventilation was controlled during the operation. After the operation and under steady-state anesthesia with 0.5 vol.% halothane and spontaneous respiration, the children received either nalbuphine 0.1 mg/kg, piritramide 0.1 mg/kg, or placebo in a randomized and double-blind manner. Respiratory and circulatory parameters were recorded for 15 min before anesthesia was discontinued. Five minutes after halothane had been discontinued the first measurement of the childrens' behavior was started with four subsequent measurements at fixed time intervals of 15 min. The measuring system was based on the six items of CHEOPS complemented by five items related to the waking state because it was assumed that the waking state generally modulates the child's ability to demonstrate pain. The design of the study was accepted by the ethic committee with the provision that neither a sedative nor an analgesic drug should be withheld from any child if indicated. Therefore, all children who seemed to feel discomfort according to the subjective impression of the anesthetist received midazolam intraveneously to a maximal dose of 2 mg. All the behavioral data were included in a factor analysis (principal components)...

Child, Preschool

Draft results of a workshop to develop guidelines for studies involving microbial incidence or populations in the oral cavity.

The following five outlines are the results to date of the Workshop held in Rockville, Maryland, in January, 1990. The topics considered in these outlines are: (1) validation of immunological and/or nucleic acid identification probes, (2) cross-calibration of methods and/or laboratories for multi-laboratory cooperative studies, (3) choosing methods for identifying or describing microbial populations appropriate to the scientific question asked, (4) microbial ecology methods (e.g., population dynamics) for the oral cavity studies, and (5) epidemiological methods (e.g., incidence, risk factor analysis) for oral microbial studies. Each topic was considered by two independent groups of participants and later rationalized into one. These outlines are meant to be working outlines for evolution of a set of guidelines to advise on designing studies with microbial incidence and/or population components. We are publishing this preliminary version to elicit comment and criticism from people who did not attend the Workshop. (Attendance at the Workshop was necessarily limited by both space and funds). Some of the topic outlines have been condensed to save Journal space. The full document is available on request. The next stage will be an open forum to gather and discuss further amplification of the "Guidelines", planned for April 17, 1991, Acapulco, Mexico, in conjunction with the IADR/AADR Meeting. Written comments and requests for further information should be sent to the Workshop organizer (MIK) at the above address.(ABSTRACT TRUNCATED AT 250 WORDS)

DNA, Bacterial