Gebruikersprofielen voor "Eijkemans, M.J.C. "
![]() | Eijkemans, MJCProfessor of biostatistics Geverifieerd e-mailadres voor umcutrecht.nl Geciteerd door 115655 |
A meta-analysis of pregnancy outcomes in women with polycystic ovary syndrome
CM Boomsma, MJC Eijkemans… - Human reproduction …, 2006 - academic.oup.com
Polycystic ovary syndrome (PCOS) is a common reproductive disorder associated with
many characteristic features, including hyperandrogenaemia, insulin resistance and obesity …
many characteristic features, including hyperandrogenaemia, insulin resistance and obesity …
Added value of ovarian reserve testing on patient characteristics in the prediction of ovarian response and ongoing pregnancy: an individual patient data approach
SL Broer, J van Disseldorp, KA Broeze… - Human reproduction …, 2013 - academic.oup.com
BACKGROUND Although ovarian reserve tests (ORTs) are frequently used prior to IVF treatment
for outcome prediction, their added predictive value is unclear. We assessed the added …
for outcome prediction, their added predictive value is unclear. We assessed the added …
Endometrial thickness and pregnancy rates after IVF: a systematic review and meta-analysis
A Kasius, JG Smit, HL Torrance… - Human reproduction …, 2014 - academic.oup.com
BACKGROUND Thin endometrium on ultrasound in the course of ovarian hyperstimulation
has been thought to be associated with poor success rates after IVF, even in the absence of …
has been thought to be associated with poor success rates after IVF, even in the absence of …
Internal validation of predictive models: efficiency of some procedures for logistic regression analysis
EW Steyerberg, FE Harrell Jr, GJJM Borsboom… - Journal of clinical …, 2001 - Elsevier
The performance of a predictive model is overestimated when simply determined on the sample
of subjects that was used to construct the model. Several internal validation methods are …
of subjects that was used to construct the model. Several internal validation methods are …
Predicting the unpredictable: a new prediction model for operating room times using individual characteristics and the surgeon's estimate
MJC Eijkemans, M Van Houdenhoven… - The Journal of the …, 2010 - pubs.asahq.org
Background : Routine predictions made by surgeons or historical mean durations have only
limited capacity to predict operating room (OR) time. The authors aimed to devise a …
limited capacity to predict operating room (OR) time. The authors aimed to devise a …
Prognostic modelling with logistic regression analysis: a comparison of selection and estimation methods in small data sets
EW Steyerberg, MJC Eijkemans… - Statistics in …, 2000 - Wiley Online Library
Logistic regression analysis may well be used to develop a prognostic model for a
dichotomous outcome. Especially when limited data are available, it is difficult to determine an …
dichotomous outcome. Especially when limited data are available, it is difficult to determine an …
Age at menopause as a risk factor for cardiovascular mortality
YT van der Schouw, Y van der Graaf, EW Steyerberg… - The lancet, 1996 - thelancet.com
Background Although an association of occurrence of menopause and subsequent oestrogen
deficiency with increased cardiovascular disease has been postulated, studies on this …
deficiency with increased cardiovascular disease has been postulated, studies on this …
Too old to have children? Lessons from natural fertility populations
MJC Eijkemans, F Van Poppel… - Human …, 2014 - academic.oup.com
STUDY QUESTION Is it possible to construct an age curve denoting the ages above which
women are biologically too old to reproduce? SUMMARY ANSWER We constructed a curve …
women are biologically too old to reproduce? SUMMARY ANSWER We constructed a curve …
Obesity affects spontaneous pregnancy chances in subfertile, ovulatory women
JW Van Der Steeg, P Steures… - Human …, 2008 - academic.oup.com
BACKGROUND Obesity is increasing rapidly among women all over the world. Obesity is a
known risk factor for subfertility due to anovulation, but it is unknown whether obesity also …
known risk factor for subfertility due to anovulation, but it is unknown whether obesity also …
Substantial effective sample sizes were required for external validation studies of predictive logistic regression models
Y Vergouwe, EW Steyerberg, MJC Eijkemans… - Journal of clinical …, 2005 - Elsevier
BACKGROUND AND OBJECTIVES: The performance of a prediction model is usually worse
in external validation data compared to the development data. We aimed to determine at …
in external validation data compared to the development data. We aimed to determine at …