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Table 3 Correlation strength of patient’s socio-demographics or clinical characteristics with Quality of life (QoL) subscale score among patients with schizophrenia or major depressive disorder (MDD)

From: Subjective quality of life among patients with schizophrenia spectrum disorder and patients with major depressive disorder

Patient characteristics

MH

RE

VT

SF

PF

RP

BP

GH

Schizophrenia

 Age

0.35*,a

0.21

0.09

0.02

0.37*,a

0.16

−0.10

0.19

 Female vs male

−0.07

− 0.11

− 0.11

− 0.11

0.01

0.11

0.00

0.02

 Malay vs Chinese

−0.26*

− 0.23*

0.06

− 0.18

− 0.43*,a

− 0.07

−0.14

0.01

 Indian vs Chinese

−0.21

− 0.12

0.15

− 0.05

− 0.30*,a

− 0.05

− 0.14

− 0.02

 Others vs Chinese

− 0.21

− 0.15

0.11

− 0.11

− 0.34*,a

−0.06

− 0.05

−0.04

 Buddhism vs Christianity

0.00

0.01

−0.02

− 0.01

− 0.04

−0.09

− 0.01

−0.12

 Islam vs Christianity

0.21

0.14

−0.13

0.05

0.32*,a

−0.07

0.04

0.11

 Hinduism vs Christianity

0.03

0.06

−0.24*

− 0.03

0.24*

0.02

0.00

−0.03

 Taoism vs Christianity

0.08

0.05

0.06

−0.01

− 0.12

− 0.14

0.00

0.05

 School years

0.05

0.02

0.17

0.12

0.20

0.20

0.04

0.02

 Married vs single

0.06

0.00

0.05

0.10

−0.18

0.20

−0.04

0.02

 Separated vs single

0.01

0.08

0.15

0.04

−0.25*

− 0.02

−0.10

0.01

 Divorced vs single

−0.11

−0.16

− 0.06

0.04

− 0.01

0.12

0.05

0.01

 Widowed vs single

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 No children vs with children

0.02

0.07

0.05

0.03

0.00

0.15

−0.09

0.01

 Economic house vs private house

0.02

0.24*

−0.05

− 0.16

0.13

0.09

0.00

−0.01

 Unemployed vs employed

− 0.15

− 0.17

− 0.04

− 0.14

− 0.06

− 0.06

− 0.10

− 0.02

 High income vs low income

− 0.06

− 0.03

− 0.02

− 0.04

− 0.06

0.06

0.05

−0.03

 Without comorbid physical illness vs with comorbid physical illness

−0.08

− 0.09

0.03

− 0.01

0.08

0.03

0.02

0.13

 Without taking medicine vs with taking medicine

−0.08

− 0.01

0.16

− 0.18

− 0.24*

− 0.24*

− 0.07

− 0.08

 Never smoker vs ex-smoker

0.04

0.11

− 0.01

0.15

0.07

0.11

0.19

−0.02

 Current smoker vs ex-smoker

0.16

0.01

0.16

0.10

0.08

0.15

0.19

0.02

 Duration of mental illness

−0.30*,a

−0.26*

− 0.09

0.01

−0.38*,a

− 0.30*,a

0.06

− 0.21

MDD

 Age

0.00

0.07

0.06

−0.03

−0.33*,a

−0.12

− 0.14

0.11

 Female vs male

−0.26*

−0.02

− 0.27*

−0.08

− 0.04

−0.06

− 0.01

−0.15

 Malay vs Chinese

0.10

0.19

0.08

0.11

−0.08

0.13

0.04

−0.04

 Indian vs Chinese

0.18

0.09

−0.01

0.03

−0.09

0.03

−0.07

−0.05

 Others vs Chinese

−0.03

0.05

0.02

−0.09

0.04

0.16

−0.10

0.06

 Buddhism vs Christianity

0.08

0.05

−0.05

0.15

0.03

0.23*,a

0.07

0.01

 Islam vs Christianity

0.09

−0.20

0.03

−0.07

0.10

−0.11

0.01

0.18

 Hinduism vs Christianity

−0.17

0.08

0.10

−0.07

−0.02

− 0.06

−0.04

0.12

 Taoism vs Christianity

−0.07

0.24*,a

−0.13

0.11

0.04

0.16

0.19

0.04

 School years

0.21

0.04

−0.04

0.14

0.02

−0.05

−0.07

− 0.17

 Married vs single

−0.04

− 0.14

0.12

− 0.16

−0.07

− 0.08

−0.05

− 0.05

 Separated vs single

0.15

0.06

0.00

−0.01

0.03

0.15

0.17

0.02

 Divorced vs single

0.03

0.02

0.17

0.07

−0.17

−0.08

−0.06

0.03

 Widowed vs single

0.04

−0.02

0.08

−0.06

−0.07

− 0.04

0.11

− 0.08

 No children vs with children

0.00

0.01

0.03

−0.11

−0.16

0.05

0.00

0.07

 Economic house vs private house

−0.09

−0.08

− 0.03

0.04

0.09

0.13

−0.02

−0.14

 Unemployed vs employed

0.05

−0.11

0.07

0.03

0.10

0.12

−0.02

0.08

 High income vs low income

−0.05

0.07

0.00

−0.12

0.28*

0.23*

0.12

0.16

 Without comorbid physical illness vs with comorbid physical illness

0.13

0.12

0.19

0.15

0.25*

0.01

0.45*

0.34*

 Without taking medicine vs with taking medicine

−0.05

0.16

0.02

0.27*

0.14

0.19

−0.13

0.06

 Never smoker vs ex-smoker

0.02

−0.06

0.07

−0.10

0.01

0.03

−0.06

0.00

 Current smoker vs ex-smoker

−0.21

−0.11

0.01

−0.05

− 0.08

−0.03

− 0.09

−0.13

 Duration of mental illness

0.29*

0.05

0.16

0.11

−0.11

−0.12

− 0.16

−0.01

  1. N/A Not available
  2. *P < 0.05
  3. aAbsolute value of correlation coefficient 0.30 ≤ r < 0.50