I am thinking to use "Response-shift model" as theoretical perspective for my paper. It is descriptive cross-sectional study. Data has been collected. But there is no follow up data. Can I use this to investigate factors of "Quality of life", but as much as in response-shift ,we see changes in response with passage of time. so please suggest me if I can choose this for my study with mentioned research objective

The detailed explanation of answer would be appreciated

Thankyou