Help with critical appraisal essay (Physiotherapy degree)

Hello everyone. I am new to this forum. I was hoping I could get some help/guidance for critical appraisal essay I need to do for my Physiotherapy degree.

It is a 2500 word critical appraisal on a quantitative questionnaire study. I have looked at the CASP tools but im not sure which one I should use for this type of study. Does anyone know or can anyone suggest another appraisal tool?

I also have the book by Trisha Greenhalgh 'How to Read a Paper'. Can anyone suggest any other books to guide me through this lengthly appraisal?

Thanks in advanced.

brighton.ac.uk/ncor/tutorials/EBP_Tutorial_intro_Critical_Appraisal_Sk ills.pdf
csudh.edu/phenom_studies/study/guide/guide.htm

I have never actually written a critical a critical appraisal essay but I think you may find these links helps helpful. Good luck!