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Table 4 Percentiles of QOL Physical Well-being score, final 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)

Ethnicity

 Chinese

0

 

0

 

0

 

0

 

0

 

 Indian

−9.7

(−25.1, 5.7)

− 9.4

(−30.9, 12.1)

− 4.2

(− 18.9, 10.6)

0.0

(−8.4, 8.4)

1.0

(−6.3, 8.4)

 Others

14.6*

(7.4, 21.7)

7.8

(1.7, 3.9)

6.3*

(2.2, 10.3)

4.2

(0.9, 7.4)

2.1

(− 0.4, 4.6)

Caregiver role

13.2*

(8.6, 17.8)

10.4*

(7.0, 13.8)

5.6*

(3.0, 8.1)

4.2*

(2.4, 5.9)

1.0

(− 0.6, 2.6)

Performance status

−4.9*

(−7.8, − 1.9)

−5.6*

(−7.9, − 3.6)

−5.6*

(−6.8, − 4.3)

−4.1*

(−5.3, − 3.1)

−2.1*

(−2.9, 1.3)

Intercept

41.7*

(30.4, 52.9)

62.5*

(55.1, 69.9)

81.9*

(76.6, 87.3)

91.7*

(87.5, 95.8)

97.9*

(94.9, 100.9)

  1. *P < 0.01
  2. Example: The 10th percentile of an Indian caregiver who is the only family member (caregiver role = 0) giving care to a patient who has symptoms but is ambulatory (performance status = 1) is 41.7–9.7 + (0 × 13.2) + (1 × [− 4.9]) = 27.1