English, Article edition: PTREND: Stata module for trend analysis for proportions Patrick Royston

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Bookmark: http://trove.nla.gov.au/version/174604
Physical Description
  • code
Language
  • English

Edition details

Title
  • PTREND: Stata module for trend analysis for proportions
Author
  • Patrick Royston
Physical Description
  • code
Notes
  • ptrend calculates a chi-square statistic for the trend (regression) of pvar on xvar, where pvar is the proportion rvar/​(rvar+nrvar). A variable called _prop, containing the values of pvar, is left behind by ptrend. ptrend also gives a chi-square test for departure from the trend line. ptrendi does the same analysis on user-entered data; the proportions are now p1 =​ r1/​(r1+nr1), p2 =​ r2/​(r2+nr2), etc.
  • nonparametric, chi-square test, trend
  • RePEc:boc:bocode:s426101
Language
  • English
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