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From |
george joseph <gjosephresearch@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
st: sampling program help |

Date |
Tue, 4 Jan 2011 16:45:16 -0500 |

Hi, I would like to have your help with writing a program to resolve the following sampling issue I have I have data on 223 sansads ( sansad_id) in 19 GPs . The variable prone_flood_cyclone (1-4) indicates the strength of floods and cyclones in the sansads and tot_sansads indicates the total number of sansads in each GP. I would like to draw a sample of 55 sansads in the following manner. 1) The sample should contain sansads from all 19 GPS 2) If the total number of sansads (tot_sansads) in a GP is less than 12, we should draw one sansad, if tot_sansads is between 13 and 14, we should draw 2 sansads, if tot_sansads is between 15 and 16, we should draw 3 sansads, and if tot_sansads is between 17 and 20, we should draw 4 sansads. The following is the METHOD OF ALLOCATION of the number of SANSADs in each of the GPs giving OVER-WEIGHTAGE to SANSADs Prone to floods, cyclones etc. If the Total number of SANSADs in one GP :8-12 Number of SANSADs to be selected : 1 Method of Allocation ( based on ne_flood_cyclone) 1 to be selected from Code’4 ‘. If Code 4 is ‘NIL’, than 1 from Code ‘3’. If Code 3 is also’ NIL’, then 1 from Code’2’. If Code 2 is also ‘NIL’, then 1from Code ‘1’. if Total number of SANSADs in one GP :13-14 Number of SANSADs to be selected : 2 Method of Allocation ( based on prone_flood_cyclone) 1 from Code ‘4’+from Code’3’ – otherwise, follow the sequence as in sl.1. if Total number of SANSADs in one GP :15-16 Number of SANSADs to be selected : 3 Method of Allocation ( based on prone_flood_cyclone) 1from Code’4’ +1from Code’3’+1 from Code’2’- otherwise, follow the sequence as in sl.1. and if Total number of SANSADs in one GP :17-20 Number of SANSADs to be selected : 4 Method of Allocation ( based on prone_flood_cyclone) 2from Code’4’+1 from Code’3’+ 1from Code’2’+1 from Code’1’- otherwise, follow the sequence as in sl.1. Could you let me know how I can do this which can be replicated . Thanks. George * * 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: sampling program help***From:*Stas Kolenikov <skolenik@gmail.com>

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