Ahmed Shiyam

12 Questions 5 Answers 0 Followers

Questions related from Ahmed Shiyam

Can I use SGRQ as a interviewer administered questionnaire, EVEN THOUGH THIS WAS VALIDATED AS A SELF administered questionnaire?

Can I use SGRQ as an interviewer-administered questionnaire, EVEN THOUGH THIS WAS VALIDATED AS A SELF-administered questionnaire?

11 February 2025 3,330 1 View

How to do case control study with cross-sectional data ? need reference ?

I need your opinion on conducting a case-control study using cross-sectional data. When assessing the quality of life of COPD patients with the SGRQ, there will be three groups of patients: those...

29 January 2025 4,885 1 View

Can we use a tool which was originally developed as a self administrated , but can we use as a interviewer administrated tool?

Can we use a tool to assess the quality of life of patients with COPD (e.g., SGRQ), which was initially developed as a self-administration, but can we use it as an interview? How to justify this?

29 January 2025 5,896 0 View

Are we using a weighted score or Likert scale score to conduct Factor analysis?

when we do Factor analysis, the response of the Likert scale types of questionnaire would be 1,2,3,4,5. so when we feed the response the the answer will be either 1,2,3,4,5. but some times, these...

04 June 2024 9,565 3 View

Do we always need to remove the questions when we analyses the validation in EFA?

I am conducting a validation study of SGRQ with EFA.SGRQ has 50 items. I got following results... with 8 factor model - NOneed to remove any questions with 7 factor model - need to remove ONE...

06 May 2024 1,091 2 View

Need a help to analysis the data on CFA in MPLUS?

I I am planning to do CFA to validate the SGRQ to local language. I tried in LISREL software but i could not the proper answer. but there was a study done by using MPLUS where they have done CFA...

26 March 2024 1,554 0 View

Need help to interpret my EFA analysis results?

I need your opinion on my research work. I am going to Validating the SGRQ. I am planing to do EFA and CFA on 50 variable of SGRQ. I found some previous research done factor analysis on SGRQ....

27 December 2023 9,182 4 View

How do I perform a exploratory factor analysis in questions with both polytomous and dichotomous response?

I am planing to do the validation study of SGRQ based on Factor analysis. SGRQ includes items with both of polytomous and dichotomous options with continuous variable. Eg : likert scale, yes or no...

29 October 2023 3,546 5 View

How do I get 1-, 3-, and 5-year survival with survival analysis in SPSS? how to draw the medien survival line in Kaplan-Meier using SPSS Statistics ?

I tried to do the survival analyse in SPSS. After getting the survival table, i do not know how to draw and computing the median survival time from Kaplan-Meier using SPSS Statistics ? and How do...

22 June 2023 2,444 1 View

How do I perform a confirmatory factor analysis in questions with both polytomous and dichotomous response?

I am going to validate the SGRQ to a local language by assessing construct validity by confirmatory factor analysis (CFA). There is a problem in analysing both types of response. Is there any way...

01 February 2022 3,308 4 View

Do i need to do both EFA and CFA to validate a tool which is already developed with out a Factor analysis??

can any of you help me? i am planning to do a validation study of SGRQ. this tool had validated more than 20 languages. but most of the studies are done convergent and discriminant validly...

01 January 1970 1,467 6 View

Minimum accepted value for communalities in EFA

What is the Minimum accepted value for communalities in EFA analysis? can we consider the value less than 0.2 also in a 50 items questionnaire?

01 January 1970 6,849 3 View