Variable

Mean ± SD

Examinations

2.6 ± 0.7

Practice

1.7 ± 0.8

Menstruation

1.6 ± 0.9

Lectures

1.5 ± 0.8

Club Activities

1.5 ± 0.9

Physique

1.5 ± 0.9

Commuting to school

1.4 ± 1.0

Physical condition

1.4 ± 0.9

Tutorials

1.3 ± 0.8

Relationship (upperclassmen and underclassmen)

1.3 ± 0.9

Climate

1.3 ± 0.9

Homework

1.2 ± 0.9

Relationship (friends)

1.2 ± 0.8

Part-time job

1.1 ± 1.0

Relationship (lover)

1.0 ± 0.9

Relationship (family)

1.0 ± 0.9

Residance

0.9 ± 0.9

Extramural activities

0.8 ± 0.8