Table 3 Subgroup analysis stratified by social isolation and withdrawal

Duration of isolation

 < 1 year

2.14

(0.94-4.86)

2.13

(1.00-4.55)

 1 year ~ < 3 years

1.4

(0.65-3.01)

0.71

(0.88-3.30)

 ≥ 3 year

2.91

(1.76-4.79)

6.04

(3.58-10.20)

Duration of withdrawal

 < 1 year

1.34

(0.31-5.78)

1.49

(0.50-4.46)

 1 year ~ < 3 years

1.23

(0.44-3.44)

0.5

(0.19-1.31)

 ≥ 3 year

1.73

(0.77-3.92)

1.45

(0.65-3.23)

First isolation age

 < 19

3.14

(0.84-11.81)

8.41

(2.40-29.43)

 19 ~ 24

1.97

(1.02-3.79)

2.71

(1.46-5.03)

 25 ~

2.33

(1.19-4.57)

2.9

(1.57-5.36)

First withdrawal age

 < 19

0.75

(0.07-7.74)

0.62

(0.16-2.50)

 19 ~ 24

1.27

(0.50-3.19)

0.82

(0.34-2.01)

 25 ~

1.4

(0.54-3.63)

1.31

(0.58-2.97)

Reasons for social isolation or withdrawal†

 Economic and Academic Difficulties

1.87

(1.20-2.93)

2.09

(1.37-3.19)

 Social Relationship and Interpersonal Conflicts

2.53

(1.58-4.05)

2.44

(1.62-3.69)

 Family Conflicts and Domestic Issues

5.47

(2.55-11.74)

3.23

(1.81-5.76)

 Psychological and Physical Health Problems

3.29

(1.86-5.82)

3.05

(1.94-4.79)