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Table 4 Regression coefficients for the recommended mapping algorithms

From: Mapping EORTC QLQ-C30 and FACT-G onto EQ-5D-5L index for patients with cancer

  Two-part beta Ordinal logistic
Logistic part Beta part Mobility Self-care Usual activities Pain/discomfort Anxiety/depression
EORTC QLQ-C30
 Intercept 1  − 11.64060  − 1.66963  − 5.91277  − 4.24535  − 9.28712  − 0.82400  − 6.65962
 Intercept 2  − 3.79148  − 2.56552  − 6.21474 2.75434  − 4.31221
 Intercept 3  − 1.85222  − 1.23110  − 4.16801 5.35925  − 2.81811
 Intercept 4 0.92106 0.17985  − 1.46187 7.64850  − 0.86976
 Age  − 0.02469a 0.02119a
 Female 0.15271 0.60145a 0.33291
 Physical functioning 0.03395a 0.02475a 0.06934a 0.06035a 0.04812a
 Role functioning 0.03742a 0.00656a 0.01498a 0.01912a 0.03914a
 Emotional functioning 0.02694a 0.00540a 0.06947a
 Cognitive functioning
 Social functioning 0.00770
 Global health status 0.03182a 0.01167a 0.01767a 0.02419a 0.02343a
 Fatigue
 Pain  − 0.06337a  − 0.07683a
 Scale parameter 8.09789
FACT-G        
 Intercept 1  − 11.54143  − 0.65502  − 1.86481  − 0.47810  − 5.51844  − 5.90937  − 6.77040
 Intercept 2  − 0.17843 0.85700  − 3.04179  − 3.06146  − 4.14108
 Intercept 3 1.19513 1.83808  − 1.60687  − 1.28905  − 2.67943
 Intercept 4 3.02125 2.87152 0.22225 0.45253  − 0.88517
 Age  − 0.01111a  − 0.04819a  − 0.04255a  − 0.02439 0.01664
 Female
 Physical well-being 0.34876a 0.09845a 0.21038a 0.19205a 0.26197a 0.24215a 0.04892a
 Social well-being
 Emotional well-being 0.06963 0.03355a 0.26968a
 Functional well-being 0.04585a 0.03922a 0.05296a 0.07714a 0.08561a 0.01740 0.04819a
 Scale parameter 6.05147
  1. EORTC QLQ-C30, European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30; FACT-G, Functional Assessment of Cancer Therapy General
  2. aP < 0.01 (not applicable to intercepts and scale parameter)