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From |
"Lucea, Marguerite" <mbaty1@son.jhmi.edu> |

To |
"statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |

Subject |
RE: st: programming question for instrument scoring with weights |

Date |
Thu, 9 Jun 2011 12:04:39 -0400 |

Thank you! This worked. -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Stas Kolenikov Sent: Thursday, June 09, 2011 12:02 PM To: statalist@hsphsun2.harvard.edu Subject: Re: st: programming question for instrument scoring with weights Oops. Thanks, Austin! There's -missing- option of -egen = rowtotal()- controlling for the missing value issue, too. On Thu, Jun 9, 2011 at 10:48 AM, Austin Nichols <austinnichols@gmail.com> wrote: > Stas; Marguerite <mbaty1@son.jhmi.edu>: > I think the -egen- "function" below is meant to be rowtotal(), not > total(). But beware of missing values counting as zeros in such a > formulation. > > On Thu, Jun 9, 2011 at 10:52 AM, Stas Kolenikov <skolenik@gmail.com> wrote: > ... >> I am assuming that your items are coded 1 for yes, 0 for no. Or you >> can do this sequentially: >> >> egen int total_score = total( item1 item2 [fill in the dots] item19 ) >> replace total_score = total_score + 4 if item2 == 1 >> ... >> replace total_score = total_score - 3 if item3a == 1 >> >> All of these ways are cumbersome, and the more lines of code you have, >> the more likely it is you will have an error somewhere. The choice >> between different ways of coding your problem is a matter of >> aesthetics, and how readable the code will be to you and other users >> of it. > ... > * > * 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/ > -- Stas Kolenikov, also found at http://stas.kolenikov.name Small print: I use this email account for mailing lists only. * * 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/ * * 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/

**References**:**st: programming question for instrument scoring with weights***From:*"Lucea, Marguerite" <mbaty1@son.jhmi.edu>

**Re: st: programming question for instrument scoring with weights***From:*Stas Kolenikov <skolenik@gmail.com>

**Re: st: programming question for instrument scoring with weights***From:*Austin Nichols <austinnichols@gmail.com>

**Re: st: programming question for instrument scoring with weights***From:*Stas Kolenikov <skolenik@gmail.com>

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