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Table 2 Percentiles of QOL total score, initial model

From: Reference values for and interpretation of the Singapore Caregiver Quality of Life Scale: a quantile regression approach

Predictor

10th

percentile

25th

percentile

50th

percentile

75th

percentile

90th

percentile

Coef.

(95% CI)

Coef.

(95% CI)

Coef.

(95% CI)

Coef.

(95% CI)

Coef.

(95% CI)

Age

 (per 10 years)

1.3

(−0.9, 3.6)

1.3

(−0.5, 3.1)

1.1

(−0.1, 2.5)

1.7

(0.5, 2.8)

0.8

(−0.5, 2.1)

Gender

 Female

0

 

0

 

0

 

0

 

0

 

 Male

1.4

(−4.8, 7.7)

1.2

(−2.6, 4.9)

−0.4

(−3.5, 2.6)

−1.5

(− 4.0, 1.1)

− 2.1

(− 4.8, 0.7)

Ethnicity

 Chinese

0

 

0

 

0

 

0

 

0

 

 Malay

12.7*

(4.0, 21.4)

5.8

(−2.8, 14.5)

4.1

(−1.1, 9.3)

7.1

(0.3, 14.0)

4.5

(−1.1, 10.0)

 Indian

13.6

(1.3, 25.9)

5.0

(−5.3, 15.3)

−0.9

(−8.9, 7.1)

3.2

(−6.1, 12.5)

0.1

(−6.5, 6.8)

 Others

15.7

(3.0, 21.4)

14.7*

(4.5, 25.0)

8.4

(0.5, 16.4)

4.7

(−1.8, 11.3)

0.2

(−6.4, 6.9)

Education

 Tertiary

0

 

0

 

0

 

0

 

0

 

 Secondary

−4.0

(−9.7, 1.6)

−1.0

(−6.7, 4.8)

1.9

(−1.8, 5.5)

0.3

(−2.7, 3.3)

0.7

(− 2.5, 3.9)

 Primary/below

−1.8

(−9.2, 5.7)

−3.9

(−10.0, 2.1)

− 3.0

(−7.7, 1.7)

−5.5

(− 10.2, −0.9)

−6.3*

(−9.9, − 2.7)

Language

 English

0

 

0

 

0

 

0

 

0

 

 Chinese

5.5

(0.3, 10.7)

3.2

(−7.8, 6.3)

1.2

(−2.2, 4.6)

1.3

(−2.0, 4.5)

−0.4

(−4.0, 3.3)

Mode of administration

 Self

0

 

0

 

0

 

0

 

0

 

 Interviewer

−1.2

(− 11.6, 9.2)

−0.8

(−7.8, 6.3)

−2.1

(− 7.7, 3.4)

−2.3

(−8.2, 3.7)

1.9

(−3.8, 7.6)

Caregiver role

 0

0

 

0

 

0

 

0

 

0

 

 1

4.5

(− 1.7, 10.7)

8.8*

(2.8, 14.8)

5.8

(0.9, 10.7)

4.3

(0.2, 8.3)

1.8

(− 2.7, 6.3)

 2

12.5*

(6.3, 18.8)

15.1*

(10.2, 20.0)

9.8*

(4.3, 15.3)

7.3*

(3.4, 11.2)

3.6

(− 0.7, 7.9)

Performance status

 0

0

 

0

 

0

 

0

 

0

 

 1

−5.5

(− 16.7, 5.8)

−6.8*

(−11.9, − 1.8)

−4.2

(− 8.0, − 0.3)

−3.1

(− 6.3, 0.0)

− 2.0

(− 5.6, 1.6)

 2

− 14.9

(− 27.7, − 2.1)

− 14.4*

(−21.3, − 7.4)

−8.0*

(−13.6, − 2.4)

−5.9

(− 11.0, − 0.7)

− 4.4

(−8.9, 0.2)

 3

−16.3*

(−28.0, − 4.6)

−14.7*

(−20.1, − 9.2)

−9.7*

(−13.7, − 5.6)

−7.4*

(−11.1, − 3.8)

−5.7*

(−9.4, − 1.9)

 4

−20.4*

(−32.3, − 8.5)

−22.2*

(−30.8, − 13.6)

−14.5*

(−20.6, − 8.5)

−8.9*

(−13.4, − 4.3)

−8.8*

(−13.8, − 3.7)

Diagnosis

 Colorectal

0

 

0

 

0

 

0

 

0

 

 Breast

5.0

(−5.2, 15.3)

0.3

(−6.6, 7.1)

1.1

(−4.8, 7.1)

0.3

(−4.3, 5.0)

3.6

(−2.1, 9.3)

 Lung

8.6

(−0.1, 17.2)

2.2

(−3.3, 7.7)

0.8

(−3.4, 4.9)

−0.3

(−4.5, 3.9)

2.1

(−1.9, 6.2)

 Others

6.3

(− 1.6, 14.3)

4.1

(−0.8, 9.1)

1.2

(−2.0, 4.4)

−1.0

(−3.7, 1.8)

−0.3

(−3.6, 3.1)

Intercept

36.4*

(15.3, 57.5)

47.2*

(5.3, 59.1)

61.3*

(51.4, 71.1)

65.9*

(55.4, 76.5)

76.5*

(66.3, 86.6)

  1. *P < 0.01