Ahlfeldt (2018) 指出,这类计量方法只适用于估计单一处理效应的情形;在需要区分多类相互关联的处理效应的研究情境中,或面对连续型 DID 的情形时,这些方法不再适用。Ahlfeldt (2018) 由此提出 Weighted Parallel Trends DD ( 以下简称 WPT DD ) 的估计方法。下文主要对 Ahlfeldt (2018) 提出的网格搜索算法 ( Gr...
Drama and traditional arts are known to captivate and involve communities, impart sensitive knowledge, and set trends in behaviour [15]. Yet previous interventions targeting diet or diarrhoea have seldom reported to draw on cultural dramatic arts, community assets, and social norms to motivate ...
Exploratory subgroup analysis will use a statistical test of interaction to examine the effect of the intervention on the primary outcome by gestational age at birth (<28 weeks and ≥ 28 weeks). Stratified analysis by the other stratification factors described and exclusive breastmilk feeding intentio...
Stata 13.1 will be used for the analyses using the mi impute and mi estimate commands to generate imputed datasets and analyse these, respectively. Process evaluation Implementation fidelity The objective of the first part of the process evaluation is to describe the level of implementation fidelity ...
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In Proceedings of the International Conference on Future Trends in Management, Economics and Human Behavior Study, Bangkok, Thailand, 3–4 May 2014. [Google Scholar] Schaffnit, S.B.; Sear, R. Support for new mothers and fertility in the United Kingdom: Not all support is equal in the deci...
Therefore, the long-run equilibrium relationship between the official exchange rate and black market exchange rate can only be confirmed in three out of five Johansen's specifications without time trends. In such cases, it is possible to estimate the co-integrating relationship, as well as ...
The sample size was calculated using a two-sided test by comparing two independent means of control and test between groups with a statistical power of 0.80, alpha of 0.05, with an allocation ratio of 1:1 using STATA 17.0 statistical software. The mean of space closure of 3 mm in control...
EHL Film Thickness Computations at Low Speeds: Risk of Artificial Trends as a Result of Poor Accuracy and Implications for Mixed Lubrication Modelling. Proc. Inst. Mech. Eng. Part J J. Eng. Tribol. 2005, 219, 285–290. [CrossRef] 43. Zhu, D. On some aspects of numerical solutions of...