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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

Predictor10thpercentile25thpercentile50thpercentile75thpercentile90thpercentile
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
 Female0 0 0 0 0 
 Male1.4(−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
 Chinese0 0 0 0 0 
 Malay12.7*(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)
 Indian13.6(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)
 Others15.7(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
 Tertiary0 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
 English0 0 0 0 0 
 Chinese5.5(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
 Self0 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
 00 0 0 0 0 
 14.5(− 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)
 212.5*(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
 00 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
 Colorectal0 0 0 0 0 
 Breast5.0(−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)
 Lung8.6(−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)
 Others6.3(− 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)
Intercept36.4*(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