1,171 questions
0
votes
0
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8
views
Weibull analysis with confidence interval in spss
I’m trying to do the Weibull analysis and to show the confidence interval in spss. I have the following variables:
Shear bond strength, which shows the maximal strength till the material breaks
...
- 1
1
vote
0
answers
17
views
COX regression model has a wide 95%CI, ph was not satisfied
enter image description hereI did a cox regression model. The data was classfied according to a variable. The three group was 7,143,7 according the ECOG score. The 95%CI was wide. In this dataset, is ...
- 11
0
votes
0
answers
15
views
Is there a way to display custom confidence intervals in a forest plot in metafor (R)?
I am trying to create a forest plot in R using forest()
in the metafor package. Since I am conducting a meta-analysis of proportions, I would like to use an alternate means of calculating confidence ...
0
votes
0
answers
27
views
Forestplot with missing CI in R
I am conducting a systematic review and meta analysis and will be creating forest plots for different disease stages. Some studies provide only mean value without confidence interval.
I saw a post ...
0
votes
1
answer
39
views
Confidence intervals with scipy
I have an array of shape (n, timesteps), where n is the number of trials and timesteps is the length of each trial. Each value of this array denotes a stochastic measurement.
I would like to implement ...
- 5,392
0
votes
2
answers
28
views
Issue with MIcombine when using svyciprop for estimating CIs. Multiple Imputation and Complex Survey
I am working with multiply imputed complex survey data and trying to estimate CIs for a proportion using the Thomas Lumley's survey and mitools package, in particular svyciprop() function with beta ...
0
votes
0
answers
14
views
Matlab resampling hypothesis test correlation - Why Do the P-Value and Confidence Interval for My Correlation Test Give Different Results?
I want to test wether there is a correlation between the (average) exam and deliverable marks obtained by each student, so I tried to do it using resampling testing.
%%
% Hypotheses:
% H0: There is ...
- 1
2
votes
1
answer
41
views
In tbl_regression, is the p-value a Wald p-value but the CI is profile-likehood?
So I'm running a multiple logistic regression model. I originally calculated p-values using the summary function and confidence intervals using confint.default.
To put everything into a neat little ...
-1
votes
1
answer
62
views
Polychoric Correlation and CI
I am trying to calculate some polychoric correlations (reproducible code here)
library(polycor)
Var1 <- (c(1,2,3,1,2,2,3,2,2,1,2))
Var2 <- (c(2,2,3,1,2,1,3,2,2,1,2))
df <- as.data....
- 145
0
votes
0
answers
28
views
ARIMA time series: different results between SAS and Python
I am trying to translate a time series analysis program from SAS to Python.
In SAS, I am using a proc arima as shown below:
%let dummy_regr = gen_1 gen_2 feb marz apr mag giu ago set ott nov dic_1 ...
- 11
0
votes
1
answer
17
views
How can I change the confidence interval of a forest plot? the at-function isn't working
I have tried everything: Different functions and changed the way I type in the confidence interval (CI) that I want. I need a CI for correlations that ranges from -1 to 1 by 0.5 steps.
my R-code:
data ...
- 3
0
votes
2
answers
85
views
Bootstrapping Two Medians with "boot" function in R
I am trying to implement the Bootstrapping Two Medians procedure either in R or in Matlab, by following the procedure described in that article:
Bootstrap each sample separately, creating the ...
- 127
0
votes
0
answers
30
views
argos-translate score not understood
argos-translate takes for translation: a text and a language ID as an input and returns the translated text and a score as output.
However the score gives values seemingly from $-\infty$ to some ...
- 103
0
votes
1
answer
82
views
What is the most appropriate way to show confidence intervals in 2D? [closed]
We have two parameters for multiple samples that we want to visualize in a dotplot. In our research group, people will commonly put confidence intervals on the figure (for example, a summary of ...
0
votes
0
answers
28
views
Confidance Interval to percentile from VGAM
How can I add a confidence interval to each quantile with a fill color similar to the line color using the VGAM or gamlss? Thankyou for your help.
I am using following code using package VGAM in R:
...
- 1
0
votes
0
answers
35
views
How can I plot a linear mixed model in R with a regression line and confidence interval that match the data?
I am trying to plot this model: m1 <- lmer(tarsus.yc ~ BMR + MMR + Msum + (1|box), data = p2).
I want one plot per predictor and use the parameter estimates from the full model for the regression ...
0
votes
1
answer
48
views
Addpoly function adds 95%CIs in text despite specifying 90% using the level argument
I've created a forest plot with subgroups based on an rma.mv object in metafor. We are reporting 90% CI's which appear correctly next to each row of individual effect size estimates when using the ...
- 3
0
votes
0
answers
34
views
Significance of the coefficients of a multinomial mixed regression built with npmlt function
I fitted (using npmlt function) a mixte multinomial regression model which ran without errors.
I expected that the outputs of the model include p-values that I didn't find.
My need now is that someone ...
2
votes
1
answer
368
views
Plotting Confidence Intervals on a ggplot
I am quite new with r so bear with me please. I am plotting a daily avg temperature across a four month period. I want to be able to visualize the confidence I have across the data. I believe the best ...
- 45
0
votes
0
answers
52
views
How to calculate the confidence intervals for a time-lagged cross correlation?
I am trying how to calculate the confidence intervals for a time-lagged cross-correlation graph. It's a bit complicated for me to understand probability concepts. I have investigated the formulas to ...
- 155
1
vote
0
answers
90
views
Why are R and Python giving me different confidence intervals in a logistic model?
I'm making a logistic model predicting whether individuals' health (0=good, 1=poor) is affected by whether they're exposed to secondhand smoke and a few other demographic factors. In R, the code I run ...
- 19
0
votes
0
answers
88
views
how to calculate confidence score for each prediction value in CNN regression problem?
In regression let's say i am doing a prediction using CNN and if i have to answer the confidence value for each prediction what should be the way to calculate the confidence level for each value of ...
0
votes
0
answers
9
views
Values used by the predict funtion
For un linear mutivariate model as :
Y ~ OM + SOCA + STIR + Uncov
built on 120 observation
when I compute
predict(Mod,data.frame(OM=15, SOCA =10, STIR=130, Uncov =3), interval ="prediction" )...
0
votes
0
answers
32
views
statsmodels ETSModel get_prediction() returns error: "Object has not attribute 'index'"
Here is my code:
import numpy as np
from statsmodels.tsa.exponential_smoothing.ets import ETSModel
vec = np.linspace(0,10, num = 50 )
ETS_model = ETSModel(vec,
error="add",
trend=&...
- 7,712
2
votes
1
answer
915
views
How to Calculate and Plot Prediction and Confidence Intervals for Linear Regression
I need to plot prediction and confidence intervals and need to use python and only the following packages. How do I plot both intervals in the same model. I managed to plot the prediction intervals ...
- 23
3
votes
1
answer
149
views
Bootstrapped confidence intervals for predicted data shows overlap when fixed effects do not
Note: This might be more appropriate for Cross Validated, and I'm fine moving it over there if requested, but I thought I would try here first since it could be r-related.
I am comparing growth curve ...
0
votes
0
answers
169
views
Confidence level and error margin calculation via python
I wanted to calculate confidence level and error margin via python language using numpy. However, I am not sure whether formaulation is true or not. I could not apply the formula of error margin to ...
- 11
0
votes
0
answers
119
views
How to interpret output of mixed effects logistic regression (glmer) with one scaled fixed effect?
I am running a logistic regression to examine the effect of year on the probability that a given cell contains off highway vehicle routes (binary response of Y or N). I am including two random effects ...
- 5
0
votes
0
answers
76
views
Different interval confidences on the same forest plot (R, survival)
I'm currently working on survival functions and especially on forest plots. I would like to plot the different levels of confidence intervals on the same line, with different colors or shades.
To do ...
- 59
0
votes
0
answers
40
views
Is plot_pacf bugged, or am I misinterpreting?
Working with univariate time series, and pacf and plot_pacf look like they disagree.
data = pd.DataFrame([92.525053,94.143395,94.411914
,93.575748,91.589286,90.287014,94.079157
,87.876495,87.574407,89....
- 149
0
votes
2
answers
327
views
Is there support for computing confidence intervals for Wilcoxon Test in Python?
Introduction/Summary of Problem
I'm working on a project with an intention of computing one-sample confidence intervals about the mean for several variables of interest in my dataset. After performing ...
- 17
0
votes
0
answers
41
views
Metaprop not producing confidence intervals for I2
I have run two meta-analyses on proportions using metaprop in meta package in R. The model was exactly the same (obviously with different data read in).
m1 <-metaprop(event=n,
n=n_total,
studlab=...
- 1,698
0
votes
0
answers
32
views
Adding Confidence Interval in Mixed Model in R
I am looking to have confidence intervals plotted in baseR/ggplot. My mixed model code is: model<- lmer(sla~ari + (1|pid), data = IESMS ) (where I am trying to visualize if aridity index (ari) has ...
1
vote
1
answer
127
views
Set custom confidence level in svymean when using svyby in r survey package
I am running code to find weighted means by group with confidence intervals for multiple variables in my dataset. My code looks like the following, demoed using mtcars package:
library(survey)
...
- 573
1
vote
1
answer
222
views
How to bootstrap indirect relationships within a multilevel sem model?
I would like to bootstrap a multilevel sem model including indirect relationships, however when I include the bootstrap argument I get the following error:
FactorA <- sem(model1, data = ...
1
vote
0
answers
69
views
Bootstrapped confidence intervals for non-linear mixed effects model
I'm trying to get bootstrapped confidence intervals for parameter estimates of a non-linear (Gompertz) mixed effects model built in the lme4 package with function nlmer(). I need to be able to graph ...
- 11
0
votes
0
answers
53
views
ECharts confidence bands in legend as one item
I counstructed ECharts confidence bands around the main series, similar to example. However, in the example there is no legend.
I use legend and I want to show main data as one legend item and ...
- 253
2
votes
1
answer
73
views
Confidence intervals on predictions using predictor variables for a non-linear mixed effects model (nlme)
I am trying to produce 95% confidence intervals for a non-linear mixed effects model using the bootstrap method described by @BenBolker here. I may be misunderstanding some of the functions used. My ...
3
votes
2
answers
315
views
How Can I Get Bootstrapped BCa Confidence Intervals for Spearman's Correlation Matrix in R?
Good evening R experts,
I am generating a Spearman's correlation matrix in R using all variables under study for my current project. To be consistent with the other analyses I am conducting, I would ...
0
votes
1
answer
58
views
Confidence Interval for Some (But Not All) Interaction Terms in a Polynomial Interacted with a Binary Treatment
I am looking for help estimating the effect of a third order polynomial term -- over and above the linear term at different values of the independent variable x. While I can estimate the point ...
- 351
0
votes
1
answer
123
views
Bootstrap for a variable after group by (getting confidence intervals for each group)
I want to perform the bootstrap function boot() to get the confidence intervals of the variable 'R_CO_GC' after grouping by the column 'BARRIER_POS' which has 3 values (after the filter).
First I ...
1
vote
1
answer
68
views
How to change the confidence interval for marginal effects at levels of a moderator variable in R
I'm trying to estimate the marginal effects of a treatment variable at different level of a moderator variable in an interactive linear model. The "margins" package says you can change the ...
- 43
0
votes
1
answer
81
views
Add confidence intervals to a plot
I've coded a martingale function, like this:
martingala <- function(bolsa, apuesta, limite, prob) {
dinero <- bolsa
betsize <- apuesta
while(dinero >= betsize & betsize <= ...
- 63
0
votes
0
answers
21
views
Error band using plt.fill_between is giving two areas instead of one
I am trying to process some data for cyclic compression testing and I have a pre-test and reload curve for three different test groups. I am using plt.fill_between to generate an error band, which has ...
0
votes
1
answer
47
views
Calculating confidence intervals using the expss package
I'm using expss tables to calculate means values. I can't find a function to report confidence intervals around the means.
I know r has several packages that can calculate and report confidence ...
- 25
0
votes
1
answer
131
views
Confidence Interval for a Chi-Square & T-Student in R
So I have this code in R ...
Tabla2 <- tbl_svysummary(data = Beta18.1Pond, by = CTBC, missing = "no",
digits = list(all_continuous() ~ c(2,2)),
...
- 1
1
vote
1
answer
88
views
Plotting confidence or prediction intervals on point plots ggplot2
I want to plot prediction interval of some data I have that come from a certain distribution where I have calculated the 95% prediction interval. So let's say I have this code
require(ggplot2)
require(...
- 345
0
votes
1
answer
128
views
Negative confidence interval for geom_smooth() in ggplot
I have an experiment where participants complete a questionnaire (each participant has a sumpdi score for this) and an experiment with two types of (within-participant) condition (0 and 25).
I want to ...
- 131
0
votes
0
answers
27
views
Problem: pooling confidence intervals when calculating SIRs?
I try to pool my confidence intervals for SIRs after using imputed datasets. A reprex with a simple example is below. The fraction of missing in my dataset was 10% and I made 10 multiple imputed ...
- 1
0
votes
0
answers
30
views
Problem: confidence intervals for excess absolute risk (EAR)
Can anyone help me to get confidence intervals for excess absolute risk (EAR) with the following function in R?
library(popEpi)
data(popmort)
data(sire)
c <- lexpand( sire, status = status, birth = ...
- 1