Hi! I need a socioeconomic status or social class scale. is there a reliable scale where the participants are categorized in upper middle lower class?

I need to test the validation of a translated version of a questionnaire. More than half of the items were formulated with categorical responses. (ex: Yes/No/I do not know).

I know, that for numerical variables, I should use CFA., Cronbach Alpha etc. What I should do in this case?

What are the criteria to identify members of the "middle class" in a society?

I am examining the reliability via test retest of a questionnaire that only has categorical variables. As a result I will be using kappa stats but I am unclear how to determine sample size. Any suggestions?

I have conducted an NMDS analysis using a Gower distance matrix to examine the dissimilarity or similarity of honeybee abundance across various regions globally in relation to different environmental conditions. My dataset includes both continuous and categorical environmental variables.

The NMDS analysis yielded a range of stress values, with the minimum stress value being 0.23 and the maximum stress value reaching 0.25. Stress values measure the goodness of fit of the NMDS solution, with lower values indicating a better fit. In my case, stress values in the range of 0.23 to 0.25 were obtained.

I would like to seek the opinions of fellow researchers regarding the interpretation of these stress values. Are stress values in this range considered acceptable for an NMDS analysis, or should further transformations or adjustments be considered to improve the analysis?

I aim to ensure that my NMDS plot provides a reliable and meaningful visual representation of the relationship between honeybee abundance and environmental conditions. Your insights and recommendations would be greatly appreciated.

I have a 5-level categorical predictor of a binary outcome and would like to see if there's a monotone trend between levels of the predictor and likelihood of the outcome. Doesn't have to be linear, just reliably increasing or decreasing. How do I code this in SAS?

A link between P.T.S.D. and social class/socioeconomic status

Variables such as income, level of education, unemployment, and receiving social support are widely used for formulating objective socioeconomic status. We can go further and estimate the wealth of the study subjects by asking about the amount of money they have in the bank, the estimated worth of their house, car, stocks, etc. Regardless of the trouble of gathering this information, is it recommended to do so? Suggestion of a book or article is highly appreciated.