This is an EXCEL LINK of the data:

https://docs.google.com/spreadsheets/d/1a6FiZmx2WWqDSqRV3E5SLORHRMi3fr3vHQTJwg2yrds/edit?usp=sharing

C19. The researcher decided to use a stepwise regression to assess which of the four independent variables were most important. Conduct this analysis and report your ndings in APA format 1.10. The researcher decided that it was best practice to control for the possible effects of age upon sIgA. Conduct a hierarchical regression of the relationship of ERIratio and DC with slgA after controlling for the influence of age in Step1 and report the finding in APA format