scholarly journals Falacias sobre el valor p compartidas por profesores y estudiantes universitarios

2017 ◽  
Vol 16 (3) ◽  
pp. 1
Author(s):  
Laura Badenes-Ribera ◽  
Dolores Frias-Navarro
Keyword(s):  
College Students ◽  
Statistical Significance ◽  
Psychological Research ◽  
Practical Significance ◽  
P Value ◽  
P Values ◽  
Statistical Education ◽  
The Mean ◽  
Estudiantes Universitarios

Resumen La “Práctica Basada en la Evidencia” exige que los profesionales valoren de forma crítica los resultados de las investigaciones psicológicas. Sin embargo, las interpretaciones incorrectas de los valores p de probabilidad son abundantes y repetitivas. Estas interpretaciones incorrectas afectan a las decisiones profesionales y ponen en riesgo la calidad de las intervenciones y la acumulación de un conocimiento científico válido. Identificar el tipo de falacia que subyace a las decisiones estadísticas es fundamental para abordar y planificar estrategias de educación estadística dirigidas a intervenir sobre las interpretaciones incorrectas. En consecuencia, el objetivo de este estudio es analizar la interpretación del valor p en estudiantes y profesores universitarios de Psicología. La muestra estuvo formada por 161 participantes (43 profesores y 118 estudiantes). La antigüedad media como profesor fue de 16.7 años (DT = 10.07). La edad media de los estudiantes fue de 21.59 (DT = 1.3). Los hallazgos sugieren que los estudiantes y profesores universitarios no conocen la interpretación correcta del valor p. La falacia de la probabilidad inversa presenta mayores problemas de comprensión. Además, se confunde la significación estadística y la significación práctica o clínica. Estos resultados destacan la necesidad de la educación estadística y re-educación estadística. Abstract The "Evidence Based Practice" requires professionals to critically assess the results of psychological research. However, incorrect interpretations of p values of probability are abundant and repetitive. These misconceptions affect professional decisions and compromise the quality of interventions and the accumulation of a valid scientific knowledge. Identifying the types of fallacies that underlying statistical decisions is fundamental for approaching and planning statistical education strategies designed to intervene in incorrect interpretations. Therefore, the aim of this study is to analyze the interpretation of p value among college students of psychology and academic psychologist. The sample was composed of 161 participants (43 academic and 118 students). The mean number of years as academic was 16.7 (SD = 10.07). The mean age of college students was 21.59 years (SD = 1.3). The findings suggest that college students and academic do not know the correct interpretation of p values. The fallacy of the inverse probability presents major problems of comprehension. In addition, statistical significance and practical significance or clinical are confused. There is a need for statistical education and statistical re-education.

scholarly journals ERRORES DE INTERPRETACIÓN DE LOS VALORES P ENTRE PSICÓLOGOS PROFESIONALES ESPAÑOLES: UN ESTUDIO EXPLORATORIO

2017 ◽  
Vol 2 (1) ◽  
pp. 551
Author(s):  
Laura Badenes-Ribera ◽  
Dolores Frias-Navarro ◽  
Amparo Bonilla-Campos
Keyword(s):  
Professional Practice ◽  
Design Methodology ◽  
Practical Significance ◽  
P Value ◽  
Psychological Interventions ◽  
P Values ◽  
Know How ◽  
Professional Psychologists ◽  
Inference Tests

Abstract.ERRORS OF INTERPRETATION OF P VALUES AMONG SPANISH PROFESSIONAL PSYCHOLOGISTS: AN EXPLORATORY STUDYThis paper analyzes the misinterpretatons of the p-value made by Spanish practitioner psychologists given that lack of knowledge and understanding of p value might affect the professionals’ decisions and jeopardize the quality of psychological interventions. We carried out a survey on 77 practitioner psychologists from Spain (68.8% women, mean age of 41.44 years, SD = 9.42). Our findings are consistent with previous research and suggest that many participants did not know how to correctly interpret p values. More than a third of them believed that p-value indicate the clinical or practical significance of the findings. These results highlight the importance of the training in statistical concepts, research design methodology, and statistical inference tests in order to improve professional practice among practitioner psychologists.Keywords: p-value, miconceptions, effect size, fallacies.Resumen.Este artículo analiza los errores de interpretación del valor p cometidos por los psicólogos profesionales españoles dado que la falta de conocimiento y comprensión del valor de p puede afectar las decisiones de los profesionales y poner en peligro la calidad de las intervenciones psicológicas. Se realizó una encuesta a 77 psicólogos profesionales españoles (68,8% mujeres, con una edad media de 41.44 años, DT = 9,42). Nuestros hallazgos son consistentes con previas investigaciones y sugieren que muchos participantes no saben cómo interpretar correctamente los valores de p. Más de un tercio de ellos creyó que el valor p indica la importancia clínica o práctica de los hallazgos. Estos resultados destacan la importancia de la formación en conceptos estadísticos, metodología de diseño de investigación y pruebas de inferencia estadística con el fin de mejorar la práctica profesional entre los psicólogos profesionales.Palabras clave: valores de p, concepciones erróneas, tamaño del efecto, falacias.

scholarly journals Quality of Life among Infertile Couples in Gaza City, Palestine

2020 ◽  
Author(s):  
suha baloushah ◽  
samira barjasteh ◽  
aymen elsous ◽  
ali alderawi ◽  
soha abou eid ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Statistical Significance ◽  
P Value ◽  
Life Questionnaire ◽  
Cross Sectional ◽  
Males And Females ◽  
The Mean ◽  
Infertile Couples

Abstract Background: Infertility is an important health problem affecting the quality of life accompanied by significant emotional and psychological consequences. Infertile couples living with emotional disturbances face challenges with less success of infertility treatment. Purposes: This study aimed to investigate the quality of life of infertile couples who seek In-Vitro Fertilizations (IVFs) by gender in Gaza city, Palestinian. Methods and materials: A cross sectional study was conducted, from Feb 2018 to Nov 2018, among 383 infertile couples selected through convenient sampling. A valid and reliable Arabic version of the fertility quality of life questionnaire (FertiQoL) was used in data collection. One way ANOVA and independent t-test was applied to compare between males and females. P value less than 0.05% was considered statistical significance. Results: The mean age of males and females was 34.54±8.54 and 29.28±6.71 years respectively. More than half of them had university degree (64% and 60% respectively). The mean duration of infertility of couples was 5.66±3.54 years. The mean males' scores of FertiQoL and its subscales (emotion, mind/body, social, core, tolerability and treatment) were significantly higher than females' scores (p<0.05). Conclusion: The males' total scores of FertiQoL and its subscales were higher than females' scores. The mean total of FertiQoL increased with better education, however, decreased with increase of age, duration of marriage, duration of infertility and number of IVF attempts. Psychological assessment and Counseling are necessary for infertile women taking into considerations factors affecting their QoL.

PENINGKATAN KUALITAS HIDUP MELALUI LOGOTERAPI PADA KLIEN YANG MENJALANI HEMODIALISIS

2019 ◽  
Vol 11 (1) ◽  
pp. 9-18
Author(s):  
Abdul Wakhid ◽  
Ana Puji Astuti ◽  
Maya Kurnia Dewi
Keyword(s):  
Quality Of Life ◽  
Renal Failure ◽  
Test Group ◽  
Sampling Technique ◽  
T Test ◽  
P Value ◽  
Number Of Patients ◽  
Post Test ◽  
The Mean

Logoterapi merupakan terapi untuk menemukan makna positif dibalik sebuah kejadian yang tidak diharapkan. Logoterapi dilaksanakan secara individu maupun berkelompok dalam bentuk konseling dan berorientasi pada pencarian makna hidup individu. Tujuan logoterapi meningkatkan makna pengalaman hidup individu yang diarahkan kepada pengambilan keputusan yang bertanggung jawab. Penelitian ini dilakukan dengan menggunakan rancangan pre-experiment dengan metode pre and post test group, artinya pengumpulan data dilakukan terhadap responden untuk membandingkan kualitas hidup sebelum dan sesudah dilakukan intervensi. Teknik pengambilan sampel dilakukan dengan metode total sampling yaitu pengambilan seluruh sampel dengan tetap memperhatikan kriteria yang telah ditetapkan. Jumlah pasien yang menjalani hemodialisis di RSUD Ungaran sebanyak 21 orang dan di RSUD Ambarawa sebanyak 25 pasien. Analisis data dilakukan dengan menggunakan uji t test dependent. Hasil penelitian didapatkan bahwa dari 46 responden didapatkan rata-rata skor kualitas hidup pasien yang mejalani hemodialisis sebesar 60.22 dengan skor terrendah 55 dan skor tertinggi 69. Bahwa dari 46 responden didapatkan rata-rata skor kualitas hidup pasien yang mejalani hemodialisis sebesar 88.72 dengan skor terrendah 79 dan skor tertinggi 103. Hasil uji statistik dengan uji t test dependent diketahui ada pengaruh logoterapi terhadap kemampuan memaknai hidup pada klien yang menjalani hemodialisis di RSUD Kabupaten Semarang (p value: 0,0001). Saran perlunya peningkatan kemampuan perawat dalam memberikan layanan kesehatan termasuk pemberian atau pemanduan penemuan makna hidup bagi pasien hemodialysis, agar selain dengan hemodialysis, ada faktor internal dari pasien yang dapat dijadikan sebagai motivasi untuk sembuh dari penyakit.   Kata Kunci: Logoterapi, kualitas hidup   IMPROVE THE QUALITY OF LIFE OF PATIENTS WITH RENAL FAILURE WHO UNDERWENT HEMODIALYSIS   ABSTRACT Logotherapy is a therapy to discover the positive meaning behind an unexpected event. Logotherapy is carried out individually or in groups in the form of counseling and oriented to the search for the meaning of individual life. This study aims to improve the quality of life of patients with renal failure who underwent hemodialysis. This research was conducted by using pre-experiment with pre-post test study. The sampling technique was done by the convenience sampling. The number of patients undergoing hemodialysis as many as 46 respondents. Data analysis was done by using test t test dependent. The result showed that from 46 respondents got the mean of quality of life of patients who had hemodialysis 60.22 with lowest score 55 and highest score 69. Whereas from 46 respondents got the mean score of life quality of patients who had hemodialysis 88.72 with score the lowest score 79 and the highest score 103. The result of statistical test with t test dependent is known there is influence of logoterapi to the ability of meaningful life on client who undergo hemodialysis at Semarang Regency hospitals (p value: 0.0001). Advice on the need to improve the nurse's ability to provide health services, including the provision or guidance of the discovery of the meaning of life for hemodialysis patients, in addition to hemodialysis, there are internal factors of the patient that can be used as a motivation to recover from illness.   Keywords: Logotherapy, quality of life, kidney failure.  

The Quality Analysis of Hallux Valgus Videos on YouTube

2021 ◽  
Author(s):  
Enes Sari ◽  
Levent FAZLI Umur
Keyword(s):  
Hallux Valgus ◽  
Information Quality ◽  
Statistical Significance ◽  
Poor Quality ◽  
Quality Analysis ◽  
Accurate Information ◽  
Youtube Videos ◽  
The Mean ◽  
The Difference

BACKGROUND:The aim of this study was to evaluate the information quality of YouTube videos on hallux valgus. METHODS:A YouTube search was performed using the keyword 'hallux valgus' to determine the first 300 videos related to hallux valgus. A total of 54 videos met our inclusion criteria and evaluated for information quality by using DISCERN, Journal of the American Medical Association (JAMA) and hallux valgus information assessment (HAVIA) scores. Number of views, time since the upload date, view rate, number of comments, number of likes, number of dislikes, video power index (VPI) values were calculated to determine video popularity. Video length (sec), video source and video content were also noted. The relation between information quality and these factors were statistically evaluated. RESULTS:The mean DISCERN score was 30.35{plus minus}11.56 (poor quality) (14-64), the mean JAMA score was 2.28{plus minus}0.96 (1-4), and the mean HAVIA score was 3.63{plus minus}2.42 (moderate quality) (0.5-8.5). Although videos uploaded by physicians had higher mean DISCERN, JAMA, and HAVIA scores than videos uploaded by non-physicians, the difference was not statistically significant. Additionally, view rates and VPI values were higher for videos uploaded by health channels, but the difference did not reach statistical significance. A statistically significant positive correlation was found between video length and DISCERN (r= 0.294, p= 0.028), and HAVIA scores (r= 0.326, p= 0.015). CONCLUSIONS:This present study demonstrated that the quality of information available on YouTube videos about hallux valgus was low and insufficient. Videos containing accurate information from reliable sources are needed to educate patients on hallux valgus, especially in less frequently mentioned topics such as postoperative complications and healing period.

Abstract MP11: Circulating Plasma Biomarkers Associated With Brain Arteriovenous Malformations

Stroke ◽  
2021 ◽  
Vol 52 (Suppl_1) ◽  
Author(s):  
Sarah E Wetzel-Strong ◽  
Shantel M Weinsheimer ◽  
Jeffrey Nelson ◽  
Ludmila Pawlikowska ◽  
Dewi Clark ◽  
...  
Keyword(s):  
Multiple Testing ◽  
Statistical Significance ◽  
Protein Profiling ◽  
P Value ◽  
P Values ◽  
Plasma Biomarkers ◽  
Standard Curve ◽  
Disease States ◽  
Heparin Plasma ◽  
Circulating Levels

Objective: Circulating plasma protein profiling may aid in the identification of cerebrovascular disease signatures. This study aimed to identify circulating angiogenic and inflammatory biomarkers that may serve as biomarkers to differentiate sporadic brain arteriovenous malformation (bAVM) patients from other conditions with brain AVMs, including hereditary hemorrhagic telangiectasia (HHT) patients. Methods: The Quantibody Human Angiogenesis Array 1000 (Raybiotech) is an ELISA multiplex panel that was used to assess the levels of 60 proteins related to angiogenesis and inflammation in heparin plasma samples from 13 sporadic unruptured bAVM patients (69% male, mean age 51 years) and 37 patients with HHT (40% male, mean age 47 years, n=19 (51%) with bAVM). The Quantibody Q-Analyzer tool was used to calculate biomarker concentrations based on the standard curve for each marker and log-transformed marker levels were evaluated for associations between disease states using a multivariable interval regression model adjusted for age, sex, ethnicity and collection site. Statistical significance was based on Bonferroni correction for multiple testing of 60 biomarkers (P< 8.3x10 - 4 ). Results: Circulating levels of two plasma proteins differed significantly between sporadic bAVM and HHT patients: PDGF-BB (P=2.6x10 -4 , PI= 3.37, 95% CI:1.76-6.46) and CCL5 (P=6.0x10 -6 , PI=3.50, 95% CI=2.04-6.03). When considering markers with a nominal p-value of less than 0.01, MMP1 and angiostatin levels also differed between patients with sporadic bAVM and HHT. Markers with nominal p-values less than 0.05 when comparing sporadic brain AVM and HHT patients also included angiostatin, IL2, VEGF, GRO, CXCL16, ITAC, and TGFB3. Among HHT patients, the circulating levels of UPAR and IL6 were elevated in patients with documented bAVMs when considering markers with nominal p-values less than 0.05. Conclusions: This study identified differential expression of two promising plasma biomarkers that differentiate sporadic bAVMs from patients with HHT. Furthermore, this study allowed us to evaluate markers that are associated with the presence of bAVMs in HHT patients, which may offer insight into mechanisms underlying bAVM pathophysiology.

Abstract 13131: The Priority of Coronary Arteriography and Therapeutic Hypothermia After Return of Spontaneous Circulation in Patients With Out-of-hospital Cardiac Arrest. the Result of Sos-kanto 2012 Study

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Shuichi Hagiwara ◽  
Kiyohiro Oshima ◽  
Masato Murata ◽  
Makoto Aoki ◽  
Kei Hayashida ◽  
...  
Keyword(s):  
Cardiac Arrest ◽  
Therapeutic Hypothermia ◽  
Statistical Significance ◽  
Coronary Arteriography ◽  
Spontaneous Circulation ◽  
P Value ◽  
Return Of Spontaneous Circulation ◽  
Overall Performance ◽  
The Mean ◽  
Hospital Cardiac Arrest

Aim: To evaluate the priority of coronary angiography (CAG) and therapeutic hypothermia therapy (TH) after return of spontaneous circulation (ROSC) in patients with out-of-hospital cardiac arrest (OHCA). Patients and Methods: SOS-KANTO 2012 study is a prospective, multicenter (69 emergency hospitals) and observational study and includes 16,452 patients with OHCA. Among the cases with ROSC in that study, we intended for patients treated with both CAG and TH within 24 hours after arrival. Those patients were divided into two groups; patients in whom TH was firstly performed (TH group), and the others in whom CAG was firstly done (CAG group). We statistically compared the prognosis between the two groups. SPSS Statistics 22 (IBM, Tokyo, Japan) was used for the statistical analysis. Statistical significance was assumed to be present at a p value of less than 0.05. Result: 233 patients were applied in this study. There were 86 patients in the TH group (M/F: 74/12, mean age; 60.0±15.2 y/o) and 147 in the CAG group (M/F: 126/21, mean age: 63.4±11.1 y/o) respectively, and no significant differences were found in the mean age and M/F ratio between the two groups. The overall performance categories (OPC) one month after ROSC in the both groups were as follows; in the TH group, OPC1: 21 (24.4%), OPC2: 3 (3.5%), OPC3: 7 (8.1%), OPC4: 8 (9.3%), OPC5: 43 (50.0%), unknown: 4 (4.7%), and in the CAG group, OPC1: 38 (25.9%), OPC2: 13 (8.8%), OPC3: 15 (10.2%), OPC4: 18 (12.2%), OPC5: 57 (38.8%), unknown: 6 (4.1%). There were no significant differences in the prognosis one month after ROSC between the two groups. Conclusion: The results which of TH and CAG you give priority to over do not affect the prognosis in patients with OHCA.

scholarly journals Predictors of Diabetes Self-Management Behaviors in Type 2 Diabetes Patients

2021 ◽  
Author(s):  
Golnaz Azami ◽  
Soh Kim Lam ◽  
Sazlina Shariff-Ghazali ◽  
Salmiah Mohd Said ◽  
Sanaz Aazami ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Type 2 Diabetes ◽  
Linear Regression Analysis ◽  
Self Management ◽  
P Value ◽  
Efficacy Expectation ◽  
The Mean ◽  
Management Behaviors

Objective: Type 2 diabetes mellitus (T2DM) is a chronic condition that requires consistent medical care to help control glycemic indices. Diabetes self-management is found to be essential for optimal glycemic control. This study aimed to investigate the predictors of diabetes self-management in adult with T2DM. Materials and Methods: A cross-sectional study was conducted. A purposive sample of 142 adults with T2DM attended an outpatient endocrine clinic in an academic hospital in Ilam, Iran was invited to participate in this study from September to October 2016. The data were collected using a combination of validated questionnaires and the blood sample. IBM SPSS software version 22 used to conduct the analysis. Hierarchical linear regression analysis with the stepwise method was used to explore the predictors of diabetes self-management.  Results: The mean age of participants was 54.2 ± (11.8) years. The mean duration of diabetes was 8.9 ± (7.4). Hierarchical linear regression analysis determined that self-management behaviors had positive relationship with efficacy expectation (B= 0.445, P-value< 0.01), quality of life (B= 0.222, P-value= 0.02), and has a negative relationship with HbA1c (B= -0.194, P-value= 0.01).  Conclusion: The result of our study indicate that better diabetes self-management behaviors can be predicted by higher efficacy expectation, the better quality of life and lower HbA1c levels. Future interventions should focus on enhancing efficacy expectation, quality of life and optimizing glycemic control to improve self-management of diabetes.

scholarly journals General Health Status, Quality Of Life and Social Support of Young Athletes and Young Non-Athletes in Yazd

2019 ◽  
Author(s):  
Seyed Saeed Mazloomy Mahmoodabad ◽  
Nahid Ardian ◽  
Hadi Eslami
Keyword(s):  
Quality Of Life ◽  
Social Support ◽  
General Health ◽  
P Value ◽  
Young Athletes ◽  
Health Quality ◽  
Study Population ◽  
Health Quality Of Life ◽  
The Mean

Background: One of the factors influencing the level of general health and quality of life of individuals, is the level of social support that people enjoy. Given the importance of general health, quality of life and the amount of social support and their relationship with the level of physical activity in young people in Yazd province counties were studied. Methods: The study population of this descriptive, cross-sectional study consisted of 15- to 29-year-old people. Given the study population, sample size was calculated for the counties Yazd, Mehriz, Ardakan and Meybod separately. Methods: A total of 1533 people were selected by cluster sampling, and a person aged 15-29 years from each family completed the questionnaire. The questionnaire used, in addition to demographic questions, included three sections general health questionnaire (GHQ-28), Multidimensional Scale of Perceived Social Support, and World Health Organization Quality Of Life Brief (WHOQOL-BREF). The data were analyzed by SPSS18, nonparametric statistical tests and Pearson's correlation. Results: The mean general health score of youth was 30.82 (9.56) and the mean scores of their quality of life and social support were 38.32 (8.67) and 42.64 (7.73), respectively. Mental health, quality of life and social support were significantly associated with education level (P-value ≤ 0.001). The quality of life of young athletes was higher than that of young non-athletes (P-value ≤ 0.001). General health and social support were higher in women than in men (P-value ≤ 0.001). Conclusion: The general health level of Yazd youth is higher than the cut-off point and not optimal, but based on social and cultural conditions in this province, the levels of social support and quality of life were found to be satisfactory. Planning to increase the level of vitality and exercise in different fields can be an opportunity to improve the general health of young people.

Fatty acid profile, carcass traits and meat quality of Nellore steers following supplementation with various lipid sources

2017 ◽  
Vol 57 (6) ◽  
pp. 1170 ◽  
Author(s):  
Isabela P. C. Carvalho ◽  
Giovani Fiorentini ◽  
Josiane F. Lage ◽  
Juliana D. Messana ◽  
Roberta. C. Canesin ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dietary Supplements ◽  
Meat Quality ◽  
Linseed Oil ◽  
Statistical Significance ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Subcutaneous Fat ◽  
Practical Significance

The aim of the present study was to evaluate the fatty acid composition of meat and subcutaneous fat, carcass traits and meat quality of Nellore steers fed diets supplemented with various lipid sources. Forty-five young bulls, with average bodyweight of 441 ± 30 kg, were allotted into 10 paddocks, with five treatments, each consisting of two paddocks. The bulls were randomly assigned into one of the following five treatments, which consisted of four lipid sources: palm oil (PO), linseed oil, rumen protected fat (soybean-based oil), whole soybean, and a control (without additional fat). Trial duration was 120 days, which included 30 days of adaptation. Supplements were offered daily at 10 g/kg bodyweight per day. Dietary supplements for providing additional fat were formulated to consist of 10% ether extract. Lipid sources did not significantly affect the average daily gain (P = 0.797) or dressing percentage (P = 0.663). Supplementation with PO increased the concentrations of lauric acid (P = 0.036) and myristic acid (P < 0.001) in the muscle and subcutaneous fat. Animals supplemented with linseed oil had significantly higher concentrations of conjugated linolenic acid in the meat (P = 0.036) and fat (P = 0.049) than did control animals. In the present study, the use of various lipid sources in dietary supplements of grazing cattle during finishing period did not affect carcass traits or physical attributes of beef. This absence of statistical significance may be related to the minimum number of repeat paddocks (2) per treatment. Thus, differences that can have a practical significance were not evidenced by statistical analysis. The inclusion of PO and protected fatty acids derived from soybean oil (rumen-protected fat) is not recommended as a method to improve the lipid profile of meat and subcutaneous fat of Nellore cattle.

P–774 Clinical effectiveness of elective single versus double blastocyst transfer in women aged 36 years or older

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
H Cai ◽  
B W Mol ◽  
S Gordts ◽  
H Wang ◽  
J Shi
Keyword(s):  
Statistical Significance ◽  
Age Groups ◽  
Clinical Effectiveness ◽  
Blastocyst Transfer ◽  
P Value ◽  
Multiple Gestation ◽  
Multiple Pregnancies ◽  
Morphological Examination ◽  
Female Age

Abstract Study question If the elective single-blastocyst transfer (eSBT) strategy can be applied to women aged 36 or older. Summary answer In women ≥36 years old with at least two blastocysts, eSBT increased cumulative livebirth rate (LBR) while minimizing twins compared with double blastocyst transfer (DBT). What is known already: In young women with a good prognosis, eSBT policy is an accepted strategy to maintain LBR while decreasing multiple gestation. However, in many areas of the world DBT is still applied in older women. Study design, size, duration We performed a retrospective cohort study of 429 women aged ≥36 years or older who received IVF ovarian stimulation cycles between Jan 2015 and Oct 2018 and who had at least two blastocysts. Women were followed up until Oct 2020 for their fertility outcomes including cumulative live birth and multiple pregnancies. The study was performed at the Northwest Women and Children’s Hospital, Xi’an, China. Participants/materials, setting, methods Out of 429 women, 240 underwent a fresh cycle of eSBT and 189 DBT. The subsequent frozen-thawed embryo transfer cycles were a combination of single- and double- blastocyst transfers, more commonly the latter. Analysis was stratified for patients in age groups 36–37, 38–39 and ≥40 and quality of the blastocyst transferred, as graded by morphological examination. Outcomes were the LBR in the fresh cycle, cumulative LBR and multiple rate after fresh and frozen embryo transfers. Main results and the role of chance The cumulative LBR was 74.2% (178/240) for eSBT versus 63.0% (119/189) for DBT (OR = 1.69, 95%CI 1.12–2.56), irrespective of female age. The multiple rate was 9% (16/178) after eSBT versus 29.4% (35/119) after DBT (P- value &lt; .001). The total number of children born was 194 after eSBT versus 154 after DBT. Stratified by female age, the cumulative LBRs in women aged 36–37 (78.9 vs 70.5%), 38–39 (68.9 and 61.1%) and ≥ 40 years (59.3 and 47.5%), were higher after eSBT compared with DBT, however, the differences did not reach statistical significance in each subgroups. LBRs in the fresh cycles were comparable for patients with eSBT compared with DBT (52.1% vs. 52.4%, OR = 0.99, 95%CI 0.68–1.45). In women &lt; 40 years, DBT resulted in a small non-significant increase in LBR in the fresh transfer (63.2% vs. 61.2%, 95%CI=0.64–1.85, 36–37 years; 48.1% vs. 41.0%, 95%CI=0.64–2.80, 38–39 years) at the expense of a marked increase in twinning rate (0–5.4% vs. 31.7–34.6%). For women ≥40 years, no significant differences were observed in the LBR (37.0% vs 45%, 95%CI 0.47–4.07) or twinning rate (0 vs 7.7%) between eSBT and DBT group. The findings persisted with and without accounting for quality of the blastocyst transferred. Limitations, reasons for caution This study is limited by its observational character. Wider implications of the findings: In women ≥36 years with two blastocysts, eSBT should be the preferred treatment which maximizes the cumulative LBR for a decrease in the rate of multiple pregnancies. Trial registration number Not applicable

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