English, Article edition: CONTRAST: Stata module to calculate contrasts between factor levels Patrick Royston

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Bookmark: http://trove.nla.gov.au/version/103883
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  • code
Language
  • English

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Title
  • CONTRAST: Stata module to calculate contrasts between factor levels
Author
  • Patrick Royston
Physical Description
  • code
Notes
  • contrast calculates contrasts between factor levels or groups of continuous data. The command has two forms. the first form of contrast permits arbitrarily complex analysis of variance or analysis of covariance models, whereas the second form and contrasi (the immediate form) only support one-way analysis of variance models. In all cases the contrast coefficients are `standardized' inside the program by subtraction of their mean, so as to add up to zero. These standardized coefficients are displayed as __a in the output. The output includes a confidence interval for L, a significance test for the hypothesis L =​ 0, an overall analysis of variance F-test that the group (or fac1) means are equal and the residual standard deviation from the analysis of variance.
  • RePEc:boc:bocode:s337701
Language
  • English
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