odds ratio

In a hypothetical study I am trying to assess whether the presence of allergy is a risk factor for the presence of any virus. For this purpose, a questionnaire was applied on which many individuals marked "yes" or "no" for the presence of allergy. Those who did not complete the questionnaire...

Hi everyone! I am doing some analysis looking at various negative outcomes for children (child labour, begging, etc.) and comparing them with a range of households characteristics (child headed, large households, elderly headed households etc) The results show some interesting findings. For...

I need have odds ratio values with CI for 3*2 categorical(age category[>20,20-40,>40] and smoking(smokers,nonsmokers). How to go about calculating the odd's ratio?

I am running ordinal logistic regression in SPSS. I would like to calculate odds ratios. What do I need to add to the syntax to obtain odds ratios? Currently my syntax looks like this: PLUM druguse WITH age yrsill BY Any_MH group /CRITERIA = CIN(95) DELTA(0) LCONVERGE(0) MXITER(100) MXSTEP(5)...

We ran a logistic regression model with Passing the certification exam (0 or 1) as an outcome. We found that one of the strongest predictors is the student's program GPA, the highest the program GPA, the highest the odds of passing the certification exam. Standardized GPA: p-value < .0001, B...

Hi, Thanks for looking at my question. Background I am doing a systematic reveiw and metanalysis, essentially on diagnostic test accuracy and particularly on the accuracy of 'tests' alone or in combination. Some studies do not report sensitivity and specificity or the % or no. of people...

Hi all Suppose I have 10 different models as such: fit1.glm <- glm(admit ~ gre , data = dat, family = "binomial") fit2.glm <- glm(admit ~ gpa, data = dat, family = "binomial") fit3.glm <- glm(admit ~ rank, data = dat, family = "binomial") ... Suppose then, I want to form a data frame...

Greetings, I have had difficulties plotting results from GLM logit models to show up as odds ratios on a log scale. Ultimately I want to obtain estimates from different models and plot the results on one graph as shown here (https://www.ctspedia.org/do/view/CTSpedia/ClinAEGraph001). Do you...

I conducted a research in to elucidate the biology a of an insect seed predator that infest seeds of a palm specie in cloud forest in Venezuela. I did collected seeds directly from the palm and seeds picked up from the forest floor in two localities. I want to know if differences exists between...

Hi, I have a basic understanding of odds ratio. I can't figure out how to integrate the space S into my odds ratio equation. For the following figure: S has 23000 genes, (all genes) A has 751 genes and (condition1) B has 375 genes (condition2) How do I calculate the OR for A ∩...

Hey guys, For a school assignment I have to compute the population specific odds ratio and the subject specific odds ratio from the table below. No GAD GAD Total No MDD 350 (93%) 26 376 (62.7%) MDD 153 71...

Hello Everyone, I'm currently writing my master's dissertation and i'm having two main issues. 1) The first one is related to the attached picture: as you can see, both the variables "deal value" and "N employees" are signicative, but the B and the Exp(B) are zero. This way they are not...

I'd like to ask for some help with a binary logistic regression. In SPSS I am building a binary logistic regression with 4 independent continuous variables(Sample size - 85). However, with one of the variables (Bicaudatus_index) I get a huge odds radio: I think that I know where the problem...

Hi all, Having some difficulty understanding the results of this paper I am including in a review. It compares the effects of 3 interventions aimed at preventing HIV on couple's relationships. A multivariate logistic regression is used and effect estimates are given (which we are told are odds...

I'm trying to help my wife with some statistics. She's looking to see if people with Removable Dentures (RD) have a higher prevalence of Combination Syndrome (CS). She did a cross-sectional study (survey) of 314 patients at her university. Of the 314 patients surveyed, 200 had Removable...

Hello, everyone! I wonder whether anyone knows how can i intepret a coefficient of constant in logistic regression. I have used "logistic" in stata, so i got oddsratios. My constant is eqiual .0441026** Please help ! i googled it , but did not find anything.

I am doing a logistic modeling with several continuous variables and binary outcome variable. 1- event 0-non event. I did the initial modeling with the variables and then did the Weight of evidence(WOE) transformation for all variables except for 1 variable using ratio of Account good/Account...

Hi I hope I've posted this in the right place. I'm converting standardised mean differences to log OR for a meta-analysis. Just wanting to know can I combine log OR with the standard OR I have from papers? Or would I need to convert the OR's from papers into log ORs for analysis...

Hi Hi, I'm new to meta-analyses and revman and would really appreciate your help! I have data from an article I wish to add to revman. They have given an adjusted odds ratio, percentages of the event, and the total number of participants in each group. I thought that if I had the...

Hi everyone! I guess this is easy, but I'm not too good in statistics so I need some help!! I'm trying to evaluate a case-control study, where the most common statistical tool is the OR... but now I'm dealing with a multiple variable analysis: This is an example: I'm analysing the...