I am currently doing a systematic review on flame retardants and their health effects. The eligible studies are displaying their data in various different ways and I need to use their data to make a single table that can answer my research question. The data presented in the eligible studies are of this type:

Multiple generalized linear regression, linear regression, multivariable linear regression generalized additive model, Pearson correlation analysis, Mann-Whitney U, partial correlation coefficient, general linear model, partial correlation, multiple stepwise regression analysis, Spearman correlation analysis.

I am sorry if the list does not make any sense or if I am just repeating the same things in different synonyms. I want to display my data in a way that is legible to a wider audience so a data sets between -1 and 1 is preferred.

Please let me know if these conversions between various models are even possible or not. I am very confused on how to proceed with this. Any help is appreciated.

Thanks!