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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
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