[Retracted] Healthcare Data-Based Prediction Algorithm for Potential Knee Joint Injury of Football Players

Table 4

Survey results of the relationship between knee injury degree and exercise time.

Degree of knee injury	Exercise time
Mild injury (30 persons)	1-2 times/week, 3–6 h/time (8 persons, 27%)
	7–9 times/week, 3–6 h/time (22 persons, 73%)
Moderate injury	1-2 time/week, 3–6 h/time (14 persons, 16%)
	7–9 time/week, 3–6 h/time (38 persons, 84%)