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

From: Meta-analysis of health state utility values measured by EuroQol 5-dimensions (EQ5D) questionnaire in Chinese women with breast cancer

Covariate Level Coefficient 95% CI P value Studies
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
  1. *reference group