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

Table 1 Univariate analysis of the mental health of contemporary college students

Variables	Grouping	Healthy, n = 814	Abnormal, n = 104	Statistic	P value
Age (mean ± SD)		22.98 ± 3.02	23.12 ± 3.16	0.443	0.658
Education, n (%)	Specialized	42 (87.50)	6 (12.50)	8.684	0.034
	Undergraduate	629 (92.36)	52 (7.64)
	Master	116 (76.32)	36 (23.68)
	Doctor	27 (72.97)	10 (27.03)
Gender, n (%)	Female	317 (90.06)	35 (9.94)	0.952	0.329
	Male	497 (87.81)	69 (12.19)
Native place, n (%)	Countryside	308 (82.35)	66 (17.65)	25.079	< 0.001
	City	506 (93.01)	38 (6.99)
Nationality, n (%)	Han	720 (88.45)	94 (11.55)	0.308	0.579
	Ethnic minority	94 (90.38)	10 (9.62)
Education level of parents, n (%)	Junior high school and below	500 (87.11)	74 (12.89)	5.361	0.069
	Senior high school/technical secondary school	223 (89.92)	25 (10.08)
	College and above	91 (94.79)	5 (5.21)
Have major life events occurred, n (%)	Yes	36 (36.73)	62 (63.27)	153.396	< 0.001
	No	778 (94.88)	42 (5.12)
Academic record, n (%)	Excellent	38 (86.36)	6 (13.64)	5.378	0.146
	Good	246 (88.81)	31 (11.19)
	Moderate	493 (89.64)	57 (10.36)
	Poor	37 (78.72)	10 (21.28)
Parental marital status, n (%)	Normal	622 (93.96)	40 (6.04)	64.313	< 0.001
	Divorced/widowed	192 (75.00)	64 (25.00)
Only child, n (%)	Yes	633 (93.92)	41 (6.08)	69.467	< 0.001
	No	181 (74.18)	63 (25.82)
Underlying disease, n (%)	Yes	698 (87.91)	96 (12.09)	3.306	0.069
	No	116 (93.54)	8 (6.46)
Take regular exercise, n (%)	Yes	371 (93.92)	24 (6.08)	19.054	< 0.001
	No	443 (84.70)	80 (15.30)
Close friends, n (%)	Yes	493 (94.63)	28 (5.37)	42.524	< 0.001
	No	321 (80.86)	76 (19.14)
PHQ-9 (mean ± SD)		36.29 ± 3.59	42.59 ± 4.35	99.409	< 0.001
GAD-7 (mean ± SD)		32.16 ± 8.13	35.24 ± 6.78	52.650	< 0.001

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

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.

Table 3 Logistic regression analysis of the influencing factors on college students’ mental health

Variables	β	SE	Wald	P value	OR (95%CI)
Education			12.166	0.007
1	-2.449	1.173	4.357	0.037	0.086 (0.009-0.861)
2	-2.507	0.725	11.957	0.001	0.081 (0.020-0.337)
3	-1.974	0.795	6.168	0.013	0.139 (0.029-0.660)
Native place	1.131	0.419	7.290	0.007	3.099 (1.363-7.043)
Exercise	-2.380	0.554	18.439	0.068	0.093 (0.031-0.274)
Parents’ marriage	1.728	0.424	16.597	< 0.001	5.628 (2.450-12.927)
Non-only child	3.616	0.583	38.489	< 0.001	37.175 (11.862-116.500)
Significant events	3.706	0.498	55.318	< 0.001	40.709 (15.329-108.111)
No close friends	1.563	0.443	12.424	< 0.001	4.773 (2.002-11.384)
PHQ-9	0.530	0.061	48.915	< 0.001	1.537 (1.363-1.734)
GAD-7	0.055	0.025	4.014	0.045	1.051 (1.001-1.103)
Constant	-22.220	2.895	58.096	< 0.001	0.000

PHQ: Patient Health Questionnaire; GAD: Generalized Anxiety Disorder; OR: Odds ratio; CI: Confidence interval.