What are the predictive factors of back pain? Does a significant relationship exist between the practice of handling equipment and back pain?

Research Question
The general research question for this study is: What are the predictive factors of back pain? The specific research questions for this study include:

(1) does a significant relationship exist between gender and back pain?

(2) Does a significant relationship exist between BMI and back pain?

(3) Does a significant relationship exist between attitude and back pain?

(4) Does a significant relationship exist between knowledge and back pain?

(5) Does a significant relationship exist between the practice of handling equipment and back pain?