observations

I performed a biomedical study where 18/3068 tested patients had a positive test result; 0.6% positive. The internationally agreed cost-effectivity threshold for this test is a positivity percentage of 0.1%. How do I formally test if the observed 0.6% is higher than the expected 0.1% from...

Can I use Diff in Diff when I only have a single treated observation? The case is that I observe the changes of a tax reform on real estate sales on the real estate prices (measured by an index). If I used the Index as my dependent variable I do not fulfill the 3rd assumption of the OLS, as...

Dear all, I am currently analyzing the effects several independent variables have on dependant variable (political party's position on immigration, to be more specific). As the cases (observations) here are political parties - the number of them is very limited (in fact, I have only 21 party...

Dear all, I have been having this problem for a while and tried a number of options after googling intensively without any success so I am hoping someone will be able to help! I am outputting proportion tables using the proportion command and I would like all the categories to appear in...

Dear everyone, I have a HH dataset consiting of about 50 or so subsets which I am trying to merge together. The following problem occures. In some of these datasets there are more observations then individuals in the survey because data on jobs has been coded as job1, job2, job3 etc... each...