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Table 2 Factors associated with suicidal ideation at T1, T2, and T3

From: Prevalence and associated factors of suicidal ideation among college students during the COVID-19 pandemic in China: a 3-wave repeated survey

Variables

Category

T1

T2

T3

Crude OR

95% Cl

Adj OR

95% Cl

Crude OR

95% Cl

Adj OR

95% Cl

Crude OR

95% Cl

Adj OR

95% Cl

Age

 

0.98***

(0.97,0.99)

0.97***

(0.95,0.98)

0.99*

(0.98,1.00)

1.00

(0.98,1.02)

0.96***

(0.96,0.97)

0.97**

(0.96,0.99)

Sex

Female

-

 

-

-

-

 

-

-

-

 

-

-

Male

1.06**

(1.03,1.10)

1.44***

(1.38,1.50)

1.18**

(1.14,1.22)

1.42***

(1.37,1.48)

1.15***

(1.12,1.19)

1.35***

(1.30,1.40)

Grade

Freshman

-

-

-

-

-

-

-

-

-

-

-

-

Sophomore

0.99*

(1.04,1.14)

1.10***

(1.04,1.17)

1.00

(1.06,1.15)

1.05

(0.99,1.11)

0.97

(1.05,1.13)

1.06**

(1.01,1.11)

Junior

1.11***

(1.06,1.17)

1.12***

(1.05,1.20)

1.09***

(1.04,1.14)

0.94

(0.87,1.00)

1.17***

(1.12,1.21)

1.04

(0.98,1.10)

Senior

1.15***

(1.09,1.21)

1.06

(0.98,1.14)

1.10***

(1.05,1.17)

0.72***

(0.65,0.78)

0.80***

(0.76,0.84)

0.80***

(0.74,0.87)

Graduate

0.61***

(0.55,0.69)

0.60***

(0.51,0.71)

0.68***

(0.62,0.74)

0.49***

(0.42,0.56)

0.66***

(0.62,0.72)

0.62***

(0.54,0.70)

Self-perceived physical health

Good

-

-

-

-

-

-

-

-

-

-

-

-

Average

3.29***

(3.11,3.47)

1.05

(0.98,1.13)

3.41***

(3.22,3.61)

1.07

(0.99,1.15)

3.61***

(3.42,3.80)

1.06

(0.99,1.14)

Poor

5.53***

(4.13,7.39)

1.27

(0.86,1.85)

7.91***

(5.95,0.00)

1.20

(0.84,1.72)

5.52***

(4.47,0.00)

0.97

(0.75,1.24)

Self-perceived mental health

Good

-

 

-

-

-

 

-

-

-

 

-

-

Average

4.85***

(4.64,5.06)

1.44***

(1.36,1.52)

4.30***

(4.14,4.48)

1.25***

(1.18,1.31)

4.20***

(4.05,4.36)

1.35***

(1.29,1.42)

Poor

15.73***

(13.72,18.03)

2.81***

(2.39,3.29)

15.13***

(13.41,17.08)

2.32***

(2.01,2.67)

12.16***

(11.09,13.34)

2.25***

(2.02,2.51)

Major physical health problem

No

-

 

-

-

-

 

-

-

-

 

-

-

Yes

1.73***

(1.42,2.11)

1.33*

(1.03,1.70)

1.90***

(1.61,2.24)

1.37**

(1.10,1.71)

1.83***

(1.49,2.23)

0.96

(0.74,1.26)

Mental illness

No

-

-

-

-

-

-

-

-

-

-

-

-

Yes

4.65***

(4.15,5.22)

1.65***

(1.41,1.92)

3.62***

(3.22,4.07)

1.52***

(1.30,1.79)

4.37***

(3.91,4.89)

2.09***

(1.78,2.46)

Ever received counseling from a professional

No

-

-

-

-

-

-

-

-

-

-

-

-

Yes

2.74***

(2.59,2.91)

1.37***

(1.27,1.48)

2.32***

(2.19,2.46)

1.23***

(1.14,1.33)

2.41***

(2.29,2.53)

1.24***

(1.16,1.33)

Psychological assistance since the outbreak

No

-

-

-

-

-

-

-

-

-

-

-

-

Yes

2.20***

(1.82,2.66)

1.04

(0.83,1.31)

2.81***

(2.39,3.29)

1.14

(0.94,1.40)

3.13***

(2.75,3.55)

1.12

(0.95,1.33)

Social media exposure

 < 1 h/Day

-

-

-

-

-

-

-

-

-

-

-

-

1–2 h/Day

0.84***

(0.81,0.87)

0.82***

(0.78,0.86)

1.11***

(1.07,1.15)

0.98

(0.94,1.03)

1.13***

(1.09,1.17)

1.12***

(1.07,1.17)

 > 2 h/Day

1.06**

(1.01,1.12)

0.92***

(0.87,0.98)

1.46***

(1.37,1.56)

1.20***

(1.10,1.30)

1.42***

(1.31,1.53)

1.36***

(1.24,1.50)

Covid-19 prevention beliefs

Yes

-

-

-

-

-

-

-

-

-

-

-

-

No

2.24***

(2.09,2.40)

1.19***

(1.09,1.30)

2.31***

(2.12,2.52)

1.32***

(1.17,1.48)

2.29***

(2.12,2.48)

1.34***

(1.21,1.49)

Implement Covid-19 preventive actions

Yes

-

-

-

-

-

-

-

-

-

-

-

-

No

2.22***

(2.07,2.37)

1.30***

(1.19,1.41)

2.37***

(2.18,2.58)

1.36***

(1.21,1.52)

2.25***

(2.08,2.44)

1.35***

(1.22,1.50)

Covid-19 curative beliefs

Yes

-

-

-

-

-

-

-

-

-

-

-

-

No

2.19***

(2.03,2.36)

1.20***

(1.09,1.32)

2.18***

(2.00,2.37)

1.14**

(1.03,1.27)

2.08***

(1.95,2.23)

1.22***

(1.12,1.33)

YSIS

Q1

-

-

-

-

-

-

-

-

-

-

-

-

Q2

2.17***

(2.00,2.35)

0.96

(0.88,1.05)

2.33***

(2.17,2.51)

0.76***

(0.69,0.83)

2.40***

(2.23,2.59)

0.79***

(0.73,0.86)

Q3

4.46***

(4.15,4.79)

0.87***

(0.80,0.94)

6.35***

(5.93,6.79)

0.80***

(0.73,0.87)

7.65***

(7.16,8.18)

1.00

(0.92,1.08)

Q4

12.79***

(11.94,13.69)

0.92*

(0.85,1.00)

13.43***

(12.59,14.32)

0.67***

(0.62,0.73)

13.40***

(12.56,14.30)

0.81***

(0.74,0.88)

PHQ-8

Q1

-

-

-

-

-

-

-

-

-

-

-

-

Q2

5.18***

(4.32,6.21)

3.44***

(2.85,4.14)

5.02***

(4.02,6.26)

4.18***

(3.34,5.24)

3.60***

(2.89,4.48)

2.51***

(2.03,3.11)

Q3

19.92***

(16.78,23.64)

7.28***

(6.06,8.75)

30.77***

(25.14,37.65)

12.36***

(9.96,15.35)

23.02***

(18.97,27.94)

11.57***

(9.42,14.22)

Q4

149.88

***

(126.86,177.09)

29.85

***

(24.86,35.84)

303.00

***

(248.20,369.90)

59.90

***

(48.17,74.49)

254.56

***

(210.35,308.06)

10.63

***

(8.61,13.12)

GAD-7

Q1

-

-

-

-

-

-

-

-

-

-

-

-

Q2

-

-

-

-

3.27***

(2.89,3.69)

1.62***

(1.43,1.84)

5.31***

(4.66,6.06)

2.72***

(2.38,3.11)

Q3

5.46***

(5.01,5.95)

2.43***

(2.22,2.66)

7.24***

(6.61,7.94)

2.37***

(2.14,2.62)

10.16***

(9.15,11.28)

5.28***

(4.75,5.87)

Q4

44.49

***

(41.26,47.97)

8.08

***

(7.41,8.82)

64.69

***

(59.83,69.96)

9.32

***

(8.49,10.22)

101.11

***

(92.05,111.06)

44.82

***

(40.33,49.80)

  1. ***P < 0.001, **P < 0.01, *P < 0.05. YSIS represents the total score of the Youth Self-Rating Insomnia Scale, PHQ-8 represents the total score of the first eight items of the 9-item Patient Health Questionnaire depressive symptoms, and GAD-7 represents the total score of the Generalized Anxiety Disorder Scale. Q1 represents the first quartile, Q2 represents the second quartile, Q3 represents the third quartile, and Q4 represents the fourth quartile
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