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xtgraph: summary graphs of xt data


  • Paul Seed

    () (Kings' College, London)


xtgraph produces summary graphs of xt data, by time and by group. It is very flexible, allowing means based on any power or 3-parameter log transformation, and error bars for SE, CI, SD and Reference Range, as well as medians with IQR. Normally, points are estimated separately for each level of t and group. However, a model option will take values from the last model fitted. This allows for linear and non-linear effects and displays interactions. The main illustration deals with data about Vitamin C and E supplementation.

Suggested Citation

  • Paul Seed, 2001. "xtgraph: summary graphs of xt data," United Kingdom Stata Users' Group Meetings 2001 6, Stata Users Group.
  • Handle: RePEc:boc:usug01:6

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