Consider a screening tool comprised of a series of questions designed to assess whether patients exhibit symptoms of depression. Each participant completes the questions and the scores are summed to produce a total score. Patients are then classified as at low, moderate, or high risk for depression based on their total scores. In the study, each patient completes the screening survey and then undergoes a psychiatric examination. Based on the psychiatric examination, patients are classified as clinically depressed or not. The following table summarizes the results of the study:

	Risk for Depression
Clinical Assessment	Low	Moderate	High	Total Score
Not Depressed	522	127	39	688
Depressed	28	18	11	57
Total	550	145	50	745

Is the clinical assessment of depression statistically independent of the patient's risk for depression based on the screening tool? Use empirical evidence to support your claim.