[ABE-L] Seminário amanhã, terça-feira, 8h, Chris Brien, online

['Clarice Garcia Borges Demetrio' via abe-l@ime.usp.br]

*Data/Horário:* 20/09, 8h – Online (inglês)

*Palestrante: *Chris Brien (University of Adelaide, Australia)

*Title:* The design and analysis of a two-phase experiments involving human
subjects: a case study

*Summary*

Two-phase experiments were introduced in 1952 by the Australian
statistician George McIntyre. Their use has been most prevalent in
agriculture experiments, especially plant breeding experiments. However,
there is the potential for their application to be much more widespread.
This potential is not being realized because of a lack of awareness of
multiphase experiments within the statistical community. A potted history
of two-phase experiments will be given and an explanation of what
constitutes a two-phase experiment provided, using a scenario in a sports
Science context as an introductory example. The use of the anatomy of a
design for understanding the confounding in the experiment will be
outlined. The case study involves a pain-rating experiment reported in a
1997 paper by Solomon, Prkachin, & Farewell. The data from a subset of
the experiment was analyzed by Farewell and Herberg (2003) and by Jarrett,
Farewell and Herzberg (2020) using analyses-of-variance and linear mixed
models. A further re-analysis using linear mixed models that has been
described by Brien (2022) will be outlined. Suggested improvements for the
design of future similar experiments, based on the results of the
re-analysis, will also be presented.

*References*

Brien, C. J. (2022). Designing, understanding and modelling two-phase
experiments with human subjects. Statistical Methods in Medical Research,
31(4), 626-645.

Farewell, V. T.; Herzberg, A. M. (2003). Plaid designs for the evaluation
of training for medical practitioners. Journal of Applied Statistics,
30(9), 957-965.

Jarrett, R. G., Farewell, V. T.; Herzberg, A. M. (2020). Random effects
models for complex designs. Statistical Methods in Medical Research,
29(12), 3695-3706.

Solomon, P. E., Prkachin, K. M.; Farewell, V. (1997). Enhancing sensitivity
to facial expression of pain. Pain, 71(3), 279-284.


Para os interessados, segue a programação (quase) completa.

Se alguém tiver interesse, escreva-me para que eu mande o link

(aqueles que não receberam ainda).


Saudações, Clarice
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