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Table 2 Definition of Student Information Form (SIF) Predictive Tool

From: Developing a predictive tool for psychological well-being among Chinese adolescents in the presence of missing data

SIF Item

Score

Gender

 

Male

+0.60

Female

0

What is your overall feeling towards your family?

 

1

+0.96

2

+0.94

3

+0.76

4 to 7

0

How often do your classmates ridicule you?

 

Regularly

-1.00

Sometimes

-0.26

Rarely

-0.13

Never

0

How often do your classmates ignore you?

 

Regularly

-0.92

Sometimes

-0.47

Rarely

-0.25

Never

0

How many hours do you spend doing your homework during weekends?

 

None/Less than one hour

+0.41

One to two hours

+0.52

Three to four hours

+0.36

Five hours or more

0

Do you have difficulties in mathematics?

 

Regularly

-1.03

Sometimes

-0.64

Rarely

-0.43

Never

0

How is your appetite?

 

Always good

+0.78

Somewhat good

+0.73

Not very good/Not good at all

0

How many hours on average do you sleep per day?

 

Less than five/Five to six

-0.80

Seven to eight

-0.16

More than eight

0

Are your friends mostly of the same sex?

 

Yes

+0.41

No

0

How many karaoke bars are there around your neighborhood?

 

None

+0.47

One

+0.70

Two to three/Many

0