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From |
"Yamamoto, Satomi" <syamamot@ad.uiuc.edu> |

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

Subject |
RE: st: SUM question |

Date |
Wed, 14 May 2008 23:31:44 -0500 |

Hello, Thank you very much for the prompt reply. I think egen newvar = rowtotal(var1 var2) is equivalent to replacing missing values with 0(zero). The SUM function in SPSS adds cases in the variable where at least one observation is valid: Var 1 Var2 1 4 3 5 4 5 5 8 . 5 . . When compute newvar= sum(var1, var2). is used, there will be 1 missing case. When compute newvar= var1+var2. is used, there are 2 missing cases. Do you have any ideas? It would be great if I could get help on this. Sincerely, Satomi -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Richard Williams Sent: Wednesday, May 14, 2008 11:47 PM To: statalist@hsphsun2.harvard.edu; statalist@hsphsun2.harvard.edu Subject: Re: st: SUM question At 10:29 PM 5/14/2008, Yamamoto, Satomi wrote: >Hello, > >I'm wondering if anybody knows the Stata command that is equivalent to >the following SPSS command: > >compute newvar= sum(var1, var2). >exe. > >The SUM function in SPSS allows you to keep cases with missing values >instaead of droppoing them. It's one way of preventing listwise >deletion. It would be great if I can get help with this. > >Sincerely, >Satomi egen newvar = rowtotal(var1 var2) ------------------------------------------- Richard Williams, Notre Dame Dept of Sociology OFFICE: (574)631-6668, (574)631-6463 HOME: (574)289-5227 EMAIL: Richard.A.Williams.5@ND.Edu WWW: http://www.nd.edu/~rwilliam * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: SUM question***From:*David Bell <dcbell@iupui.edu>

**References**:**st: SUM question***From:*"Yamamoto, Satomi" <syamamot@ad.uiuc.edu>

**Re: st: SUM question***From:*Richard Williams <Richard.A.Williams.5@ND.edu>

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