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Questions related to Advanced Statistical Analysis
Hello everybody. Broadly, I'm studying the anatomical drivers of wood density in a set of tree species from a lowland tropical forest. So I'm comparing 22 species, I sampled between 2-5...
09 September 2019 5,008 3 View
Dear Scientists, Greetings Please, could anyone give me an alternative to analyse data generated from an augmented Block design layout? The Following known softwares are not working! Could anyone...
09 September 2019 4,402 2 View
Let X1,...,Xn iid random variables with distribution F(p), where p is some parameter. Due to some reasons, p is not observable directly (in the sense that there is no way to confirm whether p is...
26 August 2019 2,285 17 View
Does anyone know what's the Lin(–), c-Kit(–), Sca-1(+) population of murine hematopoietic progenitors? I use murine HSCs and sort them by FACS, and of course, my major interest is Lin(–),...
23 August 2019 6,078 4 View
Hello everyone, I have a group of fish (n=28 per group). I have measured the amount of time that each fish spent exploring two different objects (A and B) in a squared shape tank. Then I have...
18 August 2019 9,141 7 View
Dear Scientist, I kindly plead for any one who has an idea on this to clarify me. I ran a two way ANOVA with data collected from two locations and got no location X genotype interaction, then a...
08 August 2019 7,032 10 View
08 August 2019 6,455 4 View
I have two distributions that I want to test for equality. The objective of traditional hypothesis testing is to disprove a null-hypothesis which states a lack of difference (H0: the distributions...
08 August 2019 1,575 3 View
Dear Community, For my research, I would like to perform an interrupted time series analysis to test the effectiveness of an intervention. Regarding power, I read different information: on the...
08 August 2019 3,324 3 View
08 August 2019 8,874 18 View
Polarization material appears to be useful as endodontics treatment sealer that can be optically visualised in root canals with out radiographic examination
03 August 2019 8,332 3 View
In the attached forest plot, I need to extend the gap between 0 and 1. I also need to add scale break between 5 and 9. Unfortunately, I couldn't do this with graph editor (stata) . Does anyone...
02 August 2019 7,462 2 View
Hi, I have 13 survey items with the response options YES and NO. For example, the respondent may indicates YES or NO when asked if they have a reliable method of transportation. I would like to...
01 August 2019 4,034 3 View
I'm working on a cost model to find optimum utilization rate and idle time for Offshore Support Vessels (OSVs). I would like to know how utilization rates and day rates are interrelated in OSV...
31 July 2019 5,629 0 View
Hello, I am hoping to get some suggestions about how to best organize some of my variables. Some background, my study groups subjects by the sports they play (6 sports total) and the outcome...
30 July 2019 7,605 5 View
For given samples X1...Xn, which follow the distribution F with parameters p1,...pm, one may use the maximum likelihood method to estimate p1,...pm. In the technical process, the method is only an...
18 July 2019 2,157 2 View
Hi! I have to compare relative survival (have 5-year estimates with SEs and patients number per group) across 3 time periods. Cannot use log-rank etc as (probably) it is impossible to operate with...
09 July 2019 3,158 5 View
I run a network meta-analysis. I try to run egger's and begg's test for different subgroups using these commands in stata: metabias logrr selogrr, egger by(treatment) metabias logrr selogrr, begg...
07 July 2019 3,892 6 View
07 July 2019 9,617 6 View
07 July 2019 827 6 View
I used AlphaSim (Voxel-level p< 0.01, 1000 iterations of Monte Carlo simulations with cluster-level p
28 June 2019 988 0 View
I have a model that simulates tuberculosis, with different classes for Mycobacterium tuberculosis, macrophages, lymphocytes etc. i can vary certain parameters (such as, percent of Mtb specific...
27 June 2019 7,838 9 View
I need to calculate HR and 95% CI for median survival rate in two different groups. i.e., Group 1: median survival=x and CI:(a-b) Group 1: median survival=y and CI:(c-d) I appreciate your help
25 June 2019 1,385 3 View
I am in the middle of questionnaire development and validation processes. I would like to get expert opinion on these processes whether the steps are adequately and correctly done. 1. Items...
17 June 2019 8,414 16 View