Investigation of contemporary college students’ mental health status and construction of a risk prediction model

Table 2 Independent variable assignment

Variables	Assignment
Education	Specialized = 0
	Undergraduate = 1
	Master = 2
	Doctor = 3
Only child	No = 1
	Yes = 0
Native place	Countryside = 1
	City = 0
Have major life events occurred	No = 0
	Yes = 1
Take regular exercise	No = 1
	Yes = 0
Parental marital status	Normal = 0
	Divorced/widowed = 1
Close friends	Yes = 0
	No = 1
PHQ-9	Primitive value input
GAD-7	Primitive value input

PHQ: Patient Health Questionnaire; GAD: Generalized Anxiety Disorder.