Hanish Kodali

12 Questions 16 Answers 0 Followers

Questions related from Hanish Kodali

Causal Mediation Analysis package to account for NHANES survey design?

Hello everyone, I hope this message finds you well. I'm currently working on a project where I need to perform a causal mediation analysis using the NHANES dataset. Here are the specifics of...

04 March 2024 9,821 0 View

Sample size calculation for a parallel superior RCT?

Any suggestion on calculating sample size for a superior RCT in R or SAS? I have used the 'pwr' package which gives me a different result from the one I got from an online calculator (Sample size...

05 June 2023 2,719 2 View

Fine and Grey Competing risk to account for NHANES survey weights in R?

Hi, I am trying to examine the association between exposure and outcome like CVD-specific death while accounting for the competing risk like death due to other causes. Therefore, I am using...

15 April 2023 7,441 0 View

Unable to calculate cumulative incidence function for a population representative sample Fine-Gray model for in R?

Hello everyone, Hope you all are doing well. I am trying my hand on the Fine-Gray model to calculate subdistribution hazard ratios for cardiovascular death using the NHANES dataset in R. It was...

16 August 2021 1,803 3 View

GEE for non-ordinal multinomial (3-level) outcome in SPSS?

I am trying to get a population estimate for my study, for a non-ordinal multinomial outcome- (Yes, no, improper level). I am planning to use SPSS. But could not find a function or syntax for...

23 October 2020 328 10 View

How to conduct a 2-1-2 multilevel data mediation analysis?

Hi everyone, Background- I am trying to perform a mediation analysis, in which the Exposure (level 2), mediator (level 1), and Outcome (level 2). My dataset had missing values, but I was able...

18 August 2020 4,248 5 View

Imputation of 3 level dataset- what if I have no variable in the 3rd level?

Hello everyone, I have data that was collected in 20 sites across NYC (ie level 3 - site). Each site, approximately 10 participants were recruited and baseline characteristic data was gathered...

01 August 2020 2,150 6 View

Ideal way to get an poverty level for a service area of restaurants?

I am trying to get the socio-demographic characteristics of the areas (buffers) served by restaurants. Using GIS's Network analysis, I created a buffer zone for different sites across NYC. Each...

15 June 2020 6,466 0 View

If direct effect is higher that total indirect effect of multiple mediators?

I have a single step multiple mediation model. In my analysis, the TE is 0.34, in which 0.22 is direct while 0.12 is total indirect effect (for 3 mediators all together). is it safe to say that...

01 June 2020 1,139 4 View

In multiple mediator SEM model, how to get an individual standardized indirect effect estimation and its SE in AMOS?

I have a multiple mediator model, I am using SEM method in AMOS. It provides you total indirect effect, but I wanted effect of each mediator in this model. Based on the post by Dr. Konrad...

22 January 2020 8,615 3 View

How to deal with a SEM with latent variables, Post-FIML?

I used AMOS's SEM for a mediation analysis. General Info- 1) exposure, outcome and one of the mediators are Latent variables. 2) 2 mediators are continuous observed variables 3) 4 covariate as...

15 January 2020 5,819 1 View

AMOS for multiple imputed data set?

Hello everyone, I have 1300 cases with 400 complete cases, I am trying to perform the mediation- moderation analysis using Structural Equation Modelling. As per my understanding AMOS only works...

06 November 2019 6,613 10 View