Questions tagged [treatment]
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49 questions
1 vote
0 answers
51 views
How to simulate the ATE?
I want to have a rather basic simulation for a treatment effect. The treatment is binary, the outcome is continuous. In Stata, one could simulate data as follows (I think users using different ...
0 votes
0 answers
48 views
Difference-in-Difference testing parallel trends
I am investigating how different reforms in EPL affect unemployment and unemployment duration. I have data on annual unemployment measured in persons yearly from 1990-2019 och 3 different reforms in ...
1 vote
1 answer
62 views
Gaps in Follow Up Data and Intention To Treat Analysis for Durability of Psychiatric Treatment
I'm analyzing the effects of my clinic's treatments on patient depression using the PHQ-9. Patients have a baseline PHQ score before treatment (which is a one-time Tx, not a recurring Tx like a ...
0 votes
0 answers
38 views
Controlling for pre-treatment trends in single-group ITSA study
I am running the single-group ITSA specification below, which accounts for two interventions - a mandate and an update. B0 is the intercept, B1 the pre-intervention trend, and following which is the ...
2 votes
1 answer
99 views
How to handle dependent effect sizes in meta-analysis with a single control group?
I am conducting a meta-analysis and need advice on extracting effect sizes from studies where multiple treatment groups are compared to a single control group. Specifically, I am dealing with standard ...
0 votes
0 answers
57 views
Appropriate analysis to determine who benefits more and less form a program
Around 150 participants attended a 3 months program (no control group). I have their scores before and after the program on several measures (T1 and T2). Participants went to a program in 4 different ...
1 vote
0 answers
125 views
How to generate placebo test for random false treatment?
I would like to do a placebo test to ensure the result of my main staggered DID results. I have a country-level mandate that goes into effect in different years during my sample period, and in some ...
0 votes
1 answer
579 views
Why are the AD, ACME and Prop. Mediated identical for control and treated groups in mediation analysis?
I have conducted a basic mediation analysis using mediation::mediate. My treatment variable (X) is a binary variable with two groups. My mediator and outcome variables are continuous. I also have a ...
0 votes
1 answer
72 views
Guide me on evaluating the data collected: t-tests too basic? Something more robust?
Two similar groups read short passages and had their accuracy scores and times recorded. Prior to reading the passages each group (A and B) underwent a treatment. Since the N size was low, I decided ...
0 votes
0 answers
88 views
Using likelihood ratios instead of p-values
I am analysing data from an experiment consisting of 4 treatments, and I am interested in treatment differences of DNA damage caused by a toxicant. I have consulted a statistician to discuss some of ...
4 votes
2 answers
381 views
When comparing the growth of plants under 2 treatments, how to deal with dead individuals?
I have carried a study of plant growth under 2 different treatments, each with 100 sample and measured the stem height after 3 months. I then want to carry out a t-test to compare if there is any ...
0 votes
0 answers
51 views
Comparing treatment effects across groups
I created two donation campaigns, one loss framed (N:1993) and one gained framed (N:1989) I understood donations are usually veeeery low and the sample was a lot smaller than previously expected, so ...
0 votes
1 answer
114 views
Comparing standardised values of microbial colony perimeters
I’m having a statistical problem (a rather major one) and I was wondering if you could help. I’m researching microbial chemotaxis and analysing colony perimeters by scanning their fluorescence. ...
2 votes
2 answers
178 views
Am I interpretting this interaction term correctly?
I am running a model with an interaction term and I am unsure of the interpretation even after reading the other questions here in the forum. My model looks as follows: Where roi is the return on ...
0 votes
0 answers
141 views
Time Varying Difference in Differences Model
If I am looking at the impact of different tariffs in different months on exports, can anyone tell me if this would be the correct difference in differences model? Or would it be