Mapping the Functional Assessment of Cancer Therapy - Breast (FACT-B) to the 5-level EuroQoL group’s 5-dimension questionnaire (EQ-5D-5L) utility index in a Multi-ethnic Asian population

Table 4 Descriptive summary of the baseline EQ-5D-5L utility index derived from observed data and regression models

Model	Mean	SD	Min	P10	Q1	Median	Q3	P90	Max	Upper bound
Observed data	0.7772	0.1626	0.1789	0.6079	0.6856	0.7402	0.8428	1.0000	1.0000	24.8%
Ordinary least square
Model 3	0.7772	0.1137	0.3930	0.6162	0.7059	0.7902	0.8643	0.9150	0.9583	0%
Model 4	0.7772	0.1147	0.3830	0.6149	0.7082	0.7898	0.8648	0.9146	0.9498	0%
Model 5	0.7772	0.1135	0.3868	0.6211	0.7100	0.7891	0.8660	0.9138	0.9394	0%
Tobit model
Model 3	0.8005	0.1361	0.3414	0.6101	0.7127	0.8185	0.9032	0.9659	1.0203	2.5%
Model 4	0.8004	0.1372	0.3292	0.6057	0.7165	0.8153	0.9059	0.9653	1.0092	2.9%
Model 5	0.8004	0.1355	0.3341	0.6126	0.7224	0.8158	0.9059	0.9635	0.9949	0%
Censored least absolute deviation
Model 3	0.7761	0.1095	0.4044	0.6274	0.7102	0.7887	0.8573	0.9094	0.9531	0%
Model 4	0.7760	0.1119	0.3896	0.6188	0.7119	0.7879	0.8609	0.9099	0.9448	0%
Model 5	0.7743	0.1107	0.3965	0.6183	0.7070	0.7870	0.8602	0.9083	0.9326	0%
Quantile regression
Model 3	0.7761	0.1095	0.4044	0.6274	0.7102	0.7887	0.8573	0.9094	0.9531	0%
Model 4	0.7760	0.1119	0.3896	0.6188	0.7119	0.7879	0.8609	0.9099	0.9448	0%
Model 5	0.7743	0.1107	0.3965	0.6183	0.7070	0.7870	0.8602	0.9083	0.9326	0%
Logistic quantile regression
Model 3	0.7691	0.1042	0.3861	0.6221	0.7141	0.7936	0.8469	0.8804	0.9038	0%
Model 4	0.7680	0.1051	0.3780	0.6153	0.7146	0.7896	0.8463	0.8799	0.8971	0%
Model 5	0.7675	0.1085	0.3687	0.6093	0.7104	0.7914	0.8506	0.8817	0.8957	0%

Abbreviations: SD standard deviation, Min minimum, P10 10^th percentile, Q1 1^st quartile, Q3 third quartile, P90 90^th percentile, Max maximum.

ISSN: 1477-7525