Table 10 Meta-regression of covariates for studies presenting summary data for all patients with breast cancer

Region

*China

0.82

0.79, 0.85

Li Wang Yang

Singapore

-0.05

0.11, 0.02

0.141

Cheung

Taiwan

0.10

0.04, 0.16

< 0.001

Ou

Version of EQ5D

EQ-5D-5L

0.85

0.80, 0.89

< 0.001

Li Yang Cheung Ou

EQ-5D-3L

-0.07

-0.17, 0.03

0.193

Wang

Value set

Chinese 5L

0.87

0.84, 0.90

< 0.001

Li Yang Ou

Chinese 3L

-0.09

-0.15, -0.02

0.007

Wang

Japanese

-0.09

-0.16, -0.03

0.007

Cheung

TNM

Intercept

0.93

0.739

Li Wang Yang Ou

Stage III or IV

-0.002

-0.008, 0.003

0.392

Li Wang Yang Ou

Chemotherapy

Intercept

0.70

0.68, 0.72

Li Wang Ou

Prop of pts receiving Chemo

0.003

0.003, 0.004

< 0.001

Li Wang Ou

Radiotherapy

Intercept

0.80

0.76, 0.83

Li Wang Ou

Prop of pts receiving Radio

0.002

0.001, 0.003

< 0.001

Li Wang Ou

Surgery

Intercept

0.79

0.75, 0.84

Li Wang Ou

Prop of pts receiving Surgery

0.001

0.00, 0.002

< 0.001

Li Wang Ou

University

Intercept

0.81

0.66, 0.95

Including Taiwan

0.15

-0.33, 0.62

0.54

Li Yang Ou Cheung

Excluding Taiwan

-0.44

-0.59, -0.28

< 0.001

Li Yang Cheung

Income

Intercept

0.78

0.76, 0.80

Li Yang Ou

<30,000 Yuan / yr

0.17

0.09, 0.24

< 0.001

Li Yang Ou

Married

Intercept

0.67

0.21, 1.0

Li Yang Ou Cheung

Including Taiwan

0.22

-0.32, 0.76

0.43

Li Yang Ou Cheung

Excluding Taiwan

0.34

0.23, 0.46

< 0.001

Li Yang Cheung