Vic's user avatar
Vic's user avatar
Vic's user avatar
Vic
  • Member for 11 years, 2 months
  • Last seen more than a week ago
15 votes
2 answers
28k views

Cut-off point in a ROC curve. Is there a simple function?

11 votes
1 answer
25k views

Which bootstrapped regression model should I choose?

7 votes
1 answer
7k views

How to interpret the significant interaction of two non-significant main predictors?

5 votes
1 answer
520 views

Given the below dependent variable description, should I choose either Ordered or Multinomial logistic regressions?

5 votes
1 answer
7k views

How to estimate Relative Risks in Multivariate Binary Logistic Regression Models, instead of Odds Ratios?

5 votes
2 answers
54k views

Is there a simple rule for interpretation of Interactions (and their directions) in binary logistic regression? [duplicate]

5 votes
5 answers
419 views

Multilevel MIXED Linear Regression with pseudo-repeats: Why designate "Repeated' variables, while "Subject ID" already identifies all repeats?

4 votes
1 answer
15k views

Is logistic regression still valid where there are repeated measurements and generalized estimating equations is the real deal?

4 votes
2 answers
4k views

Can bootstrapping improve the test power, when the sample size is small? [closed]

4 votes
2 answers
114 views

A curious clinical trial design - What is the type / name of this rare methodology?

4 votes
1 answer
136 views

What does a huge gap between P values of the same predictor computed in bootstrapped and non-bootstrapped versions of the same regression mean?

4 votes
2 answers
684 views

Meta analysis: How to assess the quality of each of the individual studies in a systematic way?

4 votes
0 answers
1k views

How to draw a funnel plot for an observational meta-analysis which concerns only with prevalence rates (no odds ratios or standard errors etc.)?

3 votes
3 answers
377 views

What to do when the predictors do not accord with common sense/literature, but the model is fine/best according to log likelihood and LRT?

3 votes
2 answers
294 views

ROC curve from an array of Confusion Matrices (true positive rates and false positive rates)

3 votes
2 answers
17k views

How to conduct a multilevel (hierarchical) binary logistic regression (in SPSS, R, or other software)?

3 votes
2 answers
5k views

What is the importance and implication of Random Intercept in a mixed-model?

3 votes
2 answers
11k views

Two-Way ANOVA calculation using summary data (mean, SD, sample size)

2 votes
1 answer
8k views

How to interpret the output of Cox regression with categorical nominal variables in SPSS?

2 votes
1 answer
4k views

Sample size calculation for a single proportion Without Any Comparisons (descriptive only): How to determine the margin of error in the formula?

2 votes
1 answer
820 views

Why do Minitab and SPSS give opposite results in Ordinal Logistic Regression?

2 votes
1 answer
79 views

How should I code these two variables? [duplicate]

2 votes
1 answer
501 views

After centering, interactions' effects got reversed. It was not fixed by reversing the dependent variable. What should I do?

2 votes
0 answers
78 views

Few main variables in the best model still show multicollineairty. Should I remove them despite their importance?

2 votes
1 answer
1k views

Is it normal to obtain better (smaller) P values in multivariate analysis compared to bivariate one?

2 votes
2 answers
1k views

The bootstrapped confidence intervals for ORs are strangely big or small in my binary logistic regression. Are they valid in the first place?

2 votes
0 answers
945 views

How to calculate SE for the ratio of two proportions?

1 vote
0 answers
576 views

How to decide and calculate the skewness of an asymmetric confidence interval around a mean or a mean difference? [closed]

1 vote
0 answers
143 views

A mixture of mixed-model regression and fixed-effects-only regression: what is it exactly?

1 vote
1 answer
1k views

Which statistical software can do Weibull analysis and draw these particular figures?