Sentences with phrase «for selection bias»

I found that after accounting for selection bias, on average, students in choice school perform no better than students in traditional public schools.

First, without random assignment there is no way to be sure that we fully accounted for selection bias.

The results in Table 10 support the notion that the observational study design does a good job of controlling for selection bias in the evaluation of charter effects (or that there is not much selection bias in the first place).

Importantly, our null effect estimates from the random experiment differ substantially from those found from an analysis of CPS data, raising concerns about the potential for selection bias in non-experimental estimates of returns.

These results raise questions about treating on - line venues (or even on - line dating sites) as a homogeneous lot and also underscore the potential for selection bias and the importance of addressing it.

A simple test for selection bias looks at the impact of lottery offers on the probability that lottery participants contribute MCAS scores to our analysis sample.

We also conducted the Berger - Exner test42 for selection bias not captured by observed baseline characteristics.

The Western Australian Pregnancy Cohort Study has been previously shown to represent the general Western Australian population.16 Mothers were enrolled in the study in mid-pregnancy (before any fetal outcomes were known), leaving little scope for selection bias.

The Princeton Review bases its guidebooks on unscientific administrative survey data obtained from colleges as well as surveys of current students which, Reback and Alter say, are notorious among college administrators for selection bias.

In order to correct for this selection bias, we restrict our analysis to differences across students in the type of school they attend that result from the types of schools available to them.

The terms «moderate» and «promising» require, respectively, evidence from a quasi-experimental study or a correlational study that makes statistical corrections for selection bias.

Accordingly, as with factors, the high historical returns for long - only investment strategies should be adjusted downward for selection bias.11

Considering only erroneous convictions is a recipe for selection bias, explains statistician Russell V. Lenth of the University of Iowa, who studies forensic science.

Included non-RCTs will be assessed for selection bias that may have resulted in confounding of the outcome of interest using the Newcastle - Ottawa Scale, 38 and where possible statistical methods will adjust for such confounding.

We accounted for this selection bias in our study.»

Since FastWeb is a free scholarship matching service, there is the potential for selection bias (i.e., students who are looking for scholarships).

Previous studies of the effect of breastfeeding on morbidity among full - term infants have not always accounted for selection bias that may result if infants who are breastfed are inherently healthier than bottle - fed infants.22 In the current study, the VLBW infants» ability to breastfeed did not reflect better health status as both human milk and infant formula were provided via gavage feeding especially during early enteral feedings.

It seems the original author — someone King describes as highly cited — had mentioned in his methods section that he'd applied two statistical corrections to his data to account for a selection bias.

After controlling for student and peer attributes and for selection bias, we still find a substantial positive and statistically significant effect of attending a network school on student achievement.

By comparing the educational outcomes of students who scored just above the admissions threshold (and thus were very likely to attend) and just below the admissions threshold (who mostly did not attend), Dougherty is able to account for the selection bias that has plagued prior CTE research.

Promising — at least one well - designed and well - implemented correlation study with statistical controls for selection bias.

Using an instrumental variables approach to control for selection bias, the results suggest an increase in collegiate class size leads to an increase in dropout rates and a reduction in on - time degree completion, but no change in long - run degree completion.

- parent characteristics In order to account for selection bias, this project attempts to control for the underlying differences between parents that might affect student achievement and also whether or not a student attends a choice school.

This result confirms my hypothesis and corroborates other literature indicating that after accounting for selection bias, on the whole choice schools do not outperform traditional public schools.

I can make an argument, and I hope that I have, that my methodology accounts for selection bias, but we will never know for sure.

Big Data Analysis — a third method to account for selection bias I set out to find a different method to add to the current understanding of the effect school choice has on student outcomes, taking into account the main issues involved in investigating student outcomes, including selection bias and the unobserved factors that come with it.

Most crucially, and most ludicrously, WILL's study doesn't account for selection bias — differences between students whose parents and guardians decide to enroll them in voucher schools or charter schools and those who do not.

The weakness of the method I used is needing to rely on my proxy strengths without being able to actually tell if they sufficiently account for selection bias.

QA criteria looked for selection bias, performance and assessment bias, and attribution bias (coding strategy: yes = 2, partly = 1 and no = 0).