Skip to main content

Table 2 Factor analysis of the Japanese version of the MMQL-AF

From: Development of the Japanese version of the Minneapolis-Manchester Quality of Life Survey of Health - Adolescent Form (MMQL-AF) and investigation of its reliability and validity

 

Factor 1

Factor 2

Factor 3

Factor 4

Factor 5

Factor 6

Factor 1: Social functioning & intimate relations

      

Have many close friends

.89

.00

.00

-.09

-.05

.03

Getting along well with people their age

.85

-.01

-.01

.04

-.09

-.04

Having a lot in common with their friends

.75

.04

-.12

-.09

-.09

.05

Being together with other people gives them a good feeling

.75

-.09

-.04

-.03

-.03

.11

Having similar hobbies and interests to people their age

.73

-.07

.00

-.07

.08

.02

Feel left out in groups of people their age

-.63

-.17

-.04

-.05

-.06

.06

Difficulty in making friends

-.57

-.07

-.08

-.16

-.11

.13

Find it easy to have an intimate relationship

.53

.04

.05

.04

.20

-.03

Believing that people like to be with them

.49

-.08

.15

.06

-.11

.11

Feel confident when they are with people of opposite sex

.48

-.05

.00

.07

.10

-.03

Factor 2: Psychological functioning

      

Feeling sad

-.01

.88

.03

-.03

-.08

.01

Feeling nervous or anxious

.01

.88

.05

-.07

.02

-.07

Feeling frightened

-.07

.87

.09

-.04

-.01

-.01

Feeling lonely

.13

.80

.05

-.10

.01

-.12

Feeling angry

.05

.73

.01

.02

-.11

.04

Worried about things in general

.00

.60

-.15

-.02

.11

.09

Worried about dying

-.08

.50

.02

-.13

.06

.06

Feeling tired during the day

.03

.49

-.04

.34

.02

.03

Worried about their health

-.18

.41

-.12

.15

.18

.14

Factor 3: Cognitive functioning

      

Difficulty with school work compared with others in class

-.03

.05

.80

-.10

.01

-.03

Homework or study is hard for them

.06

.03

-.77

-.11

.06

-.06

Difficulty in concentrating at school

.07

.01

-.70

-.12

.06

-.08

Difficulty in concentrating at work or school

-.01

-.06

.69

-.03

.20

.00

Needing more help with school work than others in class

.00

.06

-.66

-.07

.06

-.14

Difficulty with math or calculations

.11

-.08

.64

-.09

.16

-.09

Difficulty with reading or writing

-.03

.12

.62

-.04

-.03

-.13

Difficulty with remembering things at school/college

.05

.07

.61

.02

-.03

.05

Difficulty concentrating at other times (computer/games/playing cards/reading)

-.05

-.03

-.43

.03

.08

-.14

Factor 4: Physical functioning

      

Unable to keep up with others of their age when taking part in sports

-.05

-.14

.03

.80

-.05

-.04

Unable to do many activities because of health

.13

.02

.01

-.80

-.06

.10

Unable to do many activities because of arms or legs

-.04

.06

.01

-.72

.05

.14

Have a lot of energy for running or sports

.18

-.06

-.03

.66

-.04

.06

Feel strong and healthy

.04

-.01

-.01

-.59

-.14

-.13

Need time during day to rest

.00

-.11

-.24

-.50

.11

-.01

Have a lot of energy

.15

.16

-.16

.49

-.02

.24

Factor 5: Body image

      

Liking their body the way it is

-.08

-.02

-.02

.02

.74

.15

Feelings about their body development

.01

.06

-.06

.01

.72

.03

Being happy about the way they look

.11

-.02

.04

-.24

.68

.11

Feeling uncomfortable about the way their body is developing

.01

.05

.01

-.26

-.68

.07

Being satisfied about their weight

-.04

.05

.00

-.19

.66

.00

Feeling that others think that their body is poorly developed

-.03

-.04

-.09

-.16

-.59

.18

Factor 6: Outlook on life

      

Satisfied with the current life situation

.02

.01

.04

-.02

-.04

.83

Happy with life in general

-.03

.06

.06

.00

.08

.77

Happy with the way things are

.10

.01

.03

-.12

.07

.65

Factor correlation

Factor 1

Factor 2

Factor 3

Factor 4

Factor 5

Factor 6

Factor 1

-

.56

.47

.40

.43

.42

Factor 2

 

-

.44

.37

.47

.50

Factor 3

  

-

.36

.36

.37

Factor 4

   

-

.24

.34

Factor 5

    

-

.43

Factor 6

     

-

α

.89

.89

.88

.83

.83

.84

  1. Extraction method is principle factor analysis using Promax rotation with Kaiser normalization.
  2. Factor loadings greater than 0.40 are shown in boldface.
  3. MMQL-AF: Minneapolis-Manchester Quality of Life Survey of Health - Adolescent Form., α: Cronbach’s coefficient.