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From |
Benedikt Achatz <benedikt.achatz.sta@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: Ommit missing observations from sum, det? |

Date |
Mon, 9 Jul 2012 17:27:35 +0200 |

I am trying to seperate my data into quartiles, doing it with this code: sum initial_length, det gen initial_length_q=1 if initial_length <=r(p25) replace initial_length_q=2 if initial_length >r(p25) & initial_length <= r(p50) replace initial_length_q=3 if initial_length >r(p50) & initial_length <= r(p75) replace initial_length_q=4 if initial_length >r(p75) & initial_length <= r(p99) replace initial_length_q=5 if initial_length >r(p99) The problem that reveals itself to me is that if there are missing observations, those get put in the 99% quartile. Is there any specific reason behind it, and does anyone know how I could work around that? * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Ommit missing observations from sum, det?***From:*Nick Cox <njcoxstata@gmail.com>

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