cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Discussions

Solve problems, and share tips and tricks with other JMP users.
%3CLINGO-SUB%20id%3D%22lingo-sub-266710%22%20slang%3D%22en-US%22%20mode%3D%22UPDATE%22%3ERapporto%20di%20probabilit%C3%A0%20del%20test%20esatto%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-266710%22%20slang%3D%22en-US%22%20mode%3D%22UPDATE%22%3E%3CP%3ECIAO%2C%3C%2FP%3E%0A%3CP%3E%20%3C%2FP%3E%0A%3CP%3ESono%20un%20utente%20abituale%20di%20JMP%2C%20ma%20non%20ho%20esperienza%20di%20scripting.%20Ho%20utilizzato%20il%20test%20esatto%20di%20Fischer%20nella%20mia%20analisi%20e%20sto%20ottenendo%20i%20risultati%20come%20pubblicati.%20Ho%202%20domande%3A%3C%2FP%3E%0A%3CP%3E1.%20Perch%C3%A9%20ottengo%202%20test%20esatti%20e%20valori%20p%20diversi%3F%20Quale%20usare%3F%3C%2FP%3E%0A%3CP%3E2.%20Nel%20rapporto%20di%20probabilit%C3%A0%2C%20l'intervallo%20di%20confidenza%20non%20corrisponde%20al%20valore%20p%20(che%20%C3%A8%20%26lt%3B0%2C05).%20Immagino%20che%20abbia%20a%20che%20fare%20con%20il%20modo%20in%20cui%20vengono%20calcolati%20gli%20IC.%20Puoi%20consigliarmi%20il%20modo%20migliore%20per%20calcolare%20l'IC%20esatto%20qui%3F%20Non%20sto%20riscontrando%20questo%20problema%20con%20altre%20analisi%20esatte%20utilizzate%20nello%20stesso%20set%20di%20dati%3C%2FP%3E%0A%3CP%3E%20%3C%2FP%3E%0A%3CP%3EGrazie%3C%2FP%3E%0A%3CP%3E%20%3C%2FP%3E%0A%3CP%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%20lia-image-align-inline%22%20image-alt%3D%22Presentation1.jpg%22%20style%3D%22width%3A%20720px%3B%22%3E%3Cspan%20class%3D%22lia-inline-image-display-wrapper%22%20image-alt%3D%22Presentation1.jpg%22%20style%3D%22width%3A%20720px%3B%22%3E%3Cimg%20src%3D%22https%3A%2F%2Fcommunity.jmp.com%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F23976iC62D0C8DC6D869D1%2Fimage-size%2Flarge%3Fv%3Dv2%26amp%3Bpx%3D999%22%20role%3D%22button%22%20title%3D%22Presentation1.jpg%22%20alt%3D%22Presentation1.jpg%22%20%2F%3E%3C%2Fspan%3E%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-266710%22%20slang%3D%22en-US%22%20mode%3D%22UPDATE%22%3E%3CLINGO-LABEL%3EAnalisi%20e%20modellazione%20dei%20dati%20di%20base%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-270970%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-270970%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3E%3CP%3EHo%20contattato%20l'assistenza%20di%20JMP.%20Il%20problema%20era%20che%20i%20pesi%20utilizzati%20erano%20pesi%20non%20interi.%20Utilizzando%20pesi%20interi%20arrotondati%2C%20la%20discrepanza%20negli%20Odds%20ratio%20IC%20e%20nei%20valori%20p%20%C3%A8%20scomparsa.%3C%2FP%3E%3CP%3ESfortunatamente%2C%20sembra%20che%20JMP%20non%20sia%20in%20grado%20di%20gestire%20pesi%20non%20interi.%20Sarebbe%20utile%20avere%20questa%20funzione!%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-268997%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-268997%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3E%3CP%3ENon%20ho%20accesso%20ai%20codici%20informatici%20di%20JMP.%20Ti%20consiglio%20di%20inviare%20la%20tua%20domanda%20sull'effetto%20della%20ponderazione%20dell'analisi%20della%20tabella%20di%20contingenza%20al%20supporto%20tecnico%20di%20JMP%20(%3CA%20href%3D%22mailto%3Asupport%40jmp.com%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3E%20support%40jmp.com%3C%2FA%3E%20).%20Si%20prega%20di%20riportare%20qui%20ci%C3%B2%20che%20si%20apprende%20da%20loro%20in%20modo%20che%20altri%20membri%20della%20comunit%C3%A0%20possano%20imparare%20dalla%20vostra%20esperienza.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-268986%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-268986%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3E%3CP%3ECiao%3CA%20href%3D%22https%3A%2F%2Fcommunity.jmp.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F5358%22%20target%3D%22_blank%22%3E%20%40Mark_Bailey%3C%2FA%3E%20.%20Mi%20chiedevo%20se%20avessi%20ulteriori%20approfondimenti%20in%20merito.%20Non%20ho%20ancora%20trovato%20una%20soluzione%20a%20questo%20problema.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EHo%20provato%20a%20creare%20tabelle%20di%20contingenza%20(con%20i%20numeri%20che%20ottengo%20dopo%20la%20ponderazione)%3A%20questo%20sembra%20darmi%20OR%20e%20valore%20p%20a%202%20code%20per%20il%20test%20esatto%20che%20sono%20coerenti%20tra%20loro.%20Li%20ho%20eseguiti%20per%20diverse%20analisi%2C%20che%20sembrano%20dare%20risultati%20simili%20ma%20non%20esattamente%20gli%20stessi%20rispetto%20a%20quando%20viene%20utilizzata%20la%20variabile%20di%20ponderazione.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-266797%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-266797%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ELe%20differenze%20riguardavano%20le%20caratteristiche%20demografiche%20che%20avevamo%20per%20tutte%20le%20persone%20a%20cui%20era%20stato%20dato%20il%20sondaggio%2C%20ad%20esempio%20et%C3%A0%2C%20sesso.%20Quindi%2C%20potremmo%20usare%20questi%20dati%20per%20il%20confronto%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-266795%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-266795%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3E%3CP%3ECome%20fai%20a%20sapere%20%22%3CSPAN%3E%20differenze%20tra%20responder%20e%20non-responder%22%20se%20i%20non-responder%20non%20hanno%20risposto%3F%20%C3%88%20meglio%20che%20qualcuno%20che%20abbia%20pi%C3%B9%20familiarit%C3%A0%20con%20questo%20tipo%20di%20analisi%20prenda%20il%20sopravvento!%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-266762%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-266762%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3E%3CP%3EQuesto%20era%20un%20sondaggio%20con%20un%20tasso%20di%20risposta%20di%20circa%20il%2050%25%20con%20differenze%20tra%20rispondenti%20e%20non%20rispondenti%2C%20quindi%20la%20nostra%20decisione%20di%20adeguarci%20alla%20mancata%20risposta.%20I%20pesi%20sono%20stati%20calcolati%20sulla%20base%20di%203%20caratteristiche%20di%20base%20che%20hanno%20influenzato%20la%20risposta.%20Il%20calcolo%20del%20peso%20%C3%A8%20stato%20effettuato%20come%20segue%3A%20per%20ogni%20combinazione%20delle%203%20variabili%2C%20il%20numero%20totale%20con%20quella%20combinazione%20nella%20coorte%20originale%20ed%20%C3%A8%20stato%20diviso%20per%20il%20numero%20di%20pazienti%20con%20quella%20combinazione%20che%20hanno%20completato%20un%20sondaggio.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-266757%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-266757%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3E%3CP%3EPerch%C3%A9%20vengono%20utilizzati%20i%20pesi%20per%20i%20non-responder%3F%20Come%20vengono%20determinati%20i%20pesi%3F%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CP%3EL'utilizzo%20del%20ruolo%20peso%20cambier%C3%A0%20il%20risultato%20dell'analisi.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-266753%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-266753%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3E%3CP%3ES%C3%AC.%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-266748%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-266748%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3EPer%20aggiungere%20alla%20risposta%20di%20cui%20sopra%2C%20questi%20pesi%20sono%20per%20la%20mancata%20risposta%20al%20sondaggio%20e%20non%20esiste%20un%20progetto%20di%20studio%20complesso%20(come%20la%20stratificazione%20o%20il%20raggruppamento)%20per%20cui%20devo%20adeguarmi.%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-266744%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-266744%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3E%3CP%3EGrazie%20per%20le%20tue%20risposte.%20Penso%20anche%20che%20il%20%22peso%22%20(che%20%C3%A8%20un%20peso%20campionario%20per%20il%20disegno%20dello%20studio)%20possa%20aver%20cambiato%20le%20cose%2C%20come%3CA%20href%3D%22https%3A%2F%2Fcommunity.jmp.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F11634%22%20target%3D%22_blank%22%3E%20%40Thierry_S%3C%2FA%3E%20suggerisce.%20Se%20utilizzo%20solo%20i%20%22conteggi%22%20di%20questa%20tabella%202*2%20nella%20sezione%20%22frequenza%22%20della%20piattaforma%20di%20emergenza%2C%20ottengo%20i%20tuoi%20stessi%20risultati%2C%3CA%20href%3D%22https%3A%2F%2Fcommunity.jmp.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F5358%22%20target%3D%22_blank%22%3E%20%40Mark_Bailey%3C%2FA%3E%20.%20Per%20quanto%20riguarda%20l'ipotesi%20alternativa%2C%20dovrei%20usare%20solo%20quella%20che%20corrisponde%20ai%20valori%20a%20due%20code%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-266739%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-266739%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ECiao%20Mark%2C%3CBR%20%2F%3E%20Sembra%20che%20la%20prima%20analisi%20abbia%20utilizzato%20il%20peso%20per%20la%20frequenza%20mentre%20tu%20hai%20utilizzato%20i%20conteggi%3B%20sarebbe%20una%20possibile%20fonte%20di%20comportamento%20diverso%3F%3CBR%20%2F%3E%20Migliore%2C%3CBR%20%2F%3E%20ST%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-266718%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3ERi%3A%20rapporto%20di%20probabilit%C3%A0%20esatto%20del%20test%20di%20Fischer%20e%20intervalli%20di%20confidenza%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-266718%22%20slang%3D%22en-US%22%20mode%3D%22NONE%22%3E%3COL%3E%0A%3CLI%3ENon%20capisci%20il%20test%20esatto%20per%20una%20tabella%20di%20contingenza%202x2.%20%C3%88%20possibile%20usarlo%3CSTRONG%3E%20tre%3C%2FSTRONG%3E%20modi.%20IL%3CSTRONG%3E%20Ipotesi%20alternativa%3C%2FSTRONG%3E%20spiega%20ogni%20modo%20e%20consente%3CSTRONG%3E%20Voi%3C%2FSTRONG%3E%20per%20decidere%20quale%20dei%20tre%20test%20%C3%A8%20appropriato%20per%20la%20tua%20decisione.%3C%2FLI%3E%0A%3CLI%3EL'intervallo%20di%20confidenza%20dell'odd%20ratio%3CSTRONG%3E%20fa%3C%2FSTRONG%3E%20corrispondere%20ai%20test.%20IL%3CEM%3E%20P%3C%2FEM%3E%20-i%20valori%20sono%20maggiori%20di%20alfa%20%3D%200%2C05%20e%20l'intervallo%20di%20confidenza%20del%2095%25%20per%20l'odds%20ratio%20include%201.%3C%2FLI%3E%0A%3C%2FOL%3E%0A%3CP%3ENon%20ho%20idea%20di%20cosa%20potresti%20aver%20fatto%20di%20sbagliato%20o%20di%20diverso%20con%20questa%20analisi%20rispetto%20ad%20altre%20analisi%20con%20lo%20stesso%20set%20di%20dati.%20Quale%20altra%20analisi%20c'%C3%A8%3F%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CP%3ENon%20ottengo%20lo%20stesso%20risultato%20per%20l'analisi%20degli%20stessi%20dati.%20Guarda%20il%20mio%20risultato%3A%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CP%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%20lia-image-align-inline%22%20image-alt%3D%22Capture.JPG%22%20style%3D%22width%3A%20447px%3B%22%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%22%20image-alt%3D%22Capture.JPG%22%20style%3D%22width%3A%20447px%3B%22%3E%3CSPAN%20class%3D%22lia-inline-image-display-wrapper%22%20image-alt%3D%22Capture.JPG%22%20style%3D%22width%3A%20447px%3B%22%3E%3Cspan%20class%3D%22lia-inline-image-display-wrapper%22%20image-alt%3D%22Capture.JPG%22%20style%3D%22width%3A%20447px%3B%22%3E%3Cimg%20src%3D%22https%3A%2F%2Fcommunity.jmp.com%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F23974i1637611BB85F11CF%2Fimage-size%2Flarge%3Fv%3Dv2%26amp%3Bpx%3D999%22%20role%3D%22button%22%20title%3D%22Capture.JPG%22%20alt%3D%22Capture.JPG%22%20%2F%3E%3C%2Fspan%3E%3C%2FSPAN%3E%3C%2FSPAN%3E%3C%2FSPAN%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E
Choose Language Hide Translation Bar
Srishti
Level III

Fischer's exact test odds ratio and Confidence intervals

Hi, 

 

I am a regular user of JMP, but without experience in scripting. I have used Fischer's exact test on my analysis, and am getting the results as posted. I have 2 questions:

1. Why do I get 2 difference exact tests and p-values? Which is the one to use?

2. In the odds ratio, the confidence interval does not match the p-value (which is <0.05). I am guessing it has something to do with the way with the CIs are calculated. Can you advise the best way to calculate the exact CI here? I am not experiencing this issue with other exact analyses used in the same dataset

 

Thanks

 

Presentation1.jpg

12 REPLIES 12

Re: Fischer's exact test odds ratio and Confidence intervals

I do not have access to JMP computer codes. I recommend that you send your question about the effect of weighting the contingency table analysis to JMP Technical Support (support@jmp.com). Please report back here what you learn from them so that other Community members may learn from your experience.

Srishti
Level III

Re: Fischer's exact test odds ratio and Confidence intervals

I reached out to JMP support. The issue was that the weights used were non-integer weights. On using rounded integer weights, the discrepancy in the Odds ratio CIs and p-values disappeared.

Unfortunately, it seems JMP cannot handle non-integer weights. It would be useful to have this feature !

Re: Fischer's exact test odds ratio and Confidence intervals

Yeah.

Recommended Articles