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From |
Steven Samuels <[email protected]> |

To |
[email protected] |

Subject |
Re: st: ratio of 2 different surveys estimates? svyset , suest , fpc , nlcom |

Date |
Thu, 20 Jan 2011 14:15:42 -0500 |

Austin--

Steve On Jan 20, 2011, at 12:43 PM, Austin Nichols wrote: Steve-- This works for inference on a population that is the sum of the populations in each of two years--a strange population for many purposes.

"Is this statistically correct..?" Yes Steve [email protected] On Jan 20, 2011, at 4:03 AM, Roman Kasal wrote: ok, I understand that, I already did this once, but is this statistically correct adjusting=combine FPCs of two different surveys?What if the FPCs are really very different (this is not mentionedcase)?`-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steven Samuels Sent: Wednesday, January 19, 2011 9:08 PM To: [email protected]`

Subject: Re: st: ratio of 2 different surveys estimates? svyset ,suest, fpc , nlcom Another way of putting this: When you combine independent surveys, you must create a new stratum variable in which the individual original strata in each survey appear. You would do this in your data, for example by: **************************** egen stratum =group(year stk) ***************************** If there were 10 strata in 2006 and 10 in 2007, the new stratum variable should have 20 levels. Then a single -svyset- statement will allow joint analysis of the two surveys, as in my example. Steve [email protected]

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**Follow-Ups**:

**References**:**st: ratio of 2 different surveys estimates? svyset , suest , fpc , nlcom***From:*"Roman Kasal" <[email protected]>

**Re: st: ratio of 2 different surveys estimates? svyset , suest , fpc , nlcom***From:*Steven Samuels <[email protected]>

**Re: st: ratio of 2 different surveys estimates? svyset , suest , fpc , nlcom***From:*Steven Samuels <[email protected]>

**RE: st: ratio of 2 different surveys estimates? svyset , suest , fpc , nlcom***From:*"Roman Kasal" <[email protected]>

**Re: st: ratio of 2 different surveys estimates? svyset , suest , fpc , nlcom***From:*Steven Samuels <[email protected]>

**Re: st: ratio of 2 different surveys estimates? svyset , suest , fpc , nlcom***From:*Austin Nichols <[email protected]>

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