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Table 5 Percentiles of QOL Mental Well-being score, final 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)
Education
 Secondary/above0 0 0 0 0 
 Primary/below−10.6(−20.8, − 0.5)− 10.0(− 18.1, − 1.9)− 10.8*(−18.3, − 3.4)− 6.7(−13.9, 0.6)0.6(− 5.7, 6.9)
Caregiver role6.9*(2.2, 11.6)1.6(− 0.6, 5.6)3.3(0.2, 6.4)2.5(−0.4, 5.4)2.5(−0.8, 5.8)
Performance status−4.4*(−7.1, − 1.7)−5.0*(−7.0, − 3.0)−3.3*(−4.9, − 1.8)−3.3*(−5.2, − 1.5)−3.1*(−4.7, − 1.6)
Intercept35.0*(26.5, 43.5)55.0*(47.5, 62.5)65.8*(60.5, 71.2)78.3*(71.3, 85.4)86.9*(80.7, 93.0)
  1. *P < 0.01
  2. Example: The 10th percentile of a caregiver who has tertiary education background and is the only family member (caregiver role = 0) giving care to a patient who has symptoms but is ambulatory (performance status = 1) is 35.0 + 0 + (0 × 6.9) + (1 × [− 4.4]) = 30.6