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Table 3 shows the effects of the instruments in the first stage.
These statistics compare reasonably favorably with the Stock and Yogo (2002) suggested cut-off of around 10. Additionally, we present the modified F-statistic of Angrist and Pischke (2009) which is suggested for cases of multiple endogenous variables, and which partials out the effects of the instruments on the other endogenous variables.
Consequently, the cut-off should be raised to MDC to reduce effects of the instruments measurement errors.
Similar(57)
Advanced statistical methods have been applied, but a serious limitation is that it is impossible to disentangle the effects of the instrument used, sample characteristics, and measurement error.
Some information on the feasibility, validity, reliability and educational effect of the instruments we studied emerges from the review.
The first stage estimate of the effect of the instrument on the share of low skilled immigrants is positive, as expected, and statistically significant (p < .001).001
In this study, a holistic approach was used to evaluate the effect of the instrument parameters of a FT-NIR spectrometer on the performance of a content uniformity method with respect to a list of figures of merit.
Since we cannot test the assumption of no effect of the instrument on the outcome via pathways other than through the exposure of interest, it is not possible to completely rule out pleiotropic influences on our results.
Cone counting was then performed as described above, with all 320 images montaged, cropped and analysed by the same observer (BL) in order to isolate the effect of the instrument.
Underlined correlations show all correlations ≤ |0.02| To assess the level of agreement between the instruments, we estimated the intra-class correlation coefficients (ICC) at an individual level based on a two-way mixed-effect model where the individual effect was random and the effect of the instrument was fixed [ 48].
What is more unclear is what caused these effects of the different instruments in QBW.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com