Table 3.
Independent predictors of the EQI assessed using multivariable linear regression analysis.
| Variables | β (95% CI) | Standardized β | P values | Adjusted R2 |
| EQI of all hospitals | 0.473 | |||
| Grade of hospital (tertiary vs. secondary) | 116.39 (105.10–127.68) | 0.34 | <0.01 | |
| Number of endoscopists | 9.59 (8.70–10.48) | 0.38 | <0.01 | |
| Annual volume of endoscopy (×103) | 0.33 (0.14–0.52) | 0.05 | <0.01 | |
| Proportion of urban population | 1.85 (0.64–3.06) | 0.10 | <0.01 | |
| Region | ||||
| Northeast | −41.67 (−64.58 to −18.75) | −0.07 | <0.01 | |
| Central | −21.38 (−36.54 to −6.22) | −0.05 | <0.01 | |
| West | −19.02 (−35.00 to −3.04) | −0.05 | 0.02 | |
| East | Reference | |||
| Health expenditure (×109 CNY) | −0.12 (−0.29 to 0.04) | −0.03 | 0.13 | |
| GDP per capita (×103 CNY) | 0.01 (−0.36 to 0.39) | 0.002 | 0.95 | |
| EQI of secondary hospitals | 0.229 | |||
| Number of endoscopists | 21.15 (18.79–23.51) | 0.41 | <0.01 | |
| Annual volume of endoscopy (×103) | 0.20 (0.02–0.39) | 0.05 | 0.03 | |
| Proportion of urban population (%) | 2.03 (1.15–2.91) | 0.13 | <0.01 | |
| Region | ||||
| Northeast | −14.47 (−39.64 to 10.71) | −0.03 | 0.26 | |
| Central | −21.29 (−39.16 to −3.43) | −0.07 | 0.02 | |
| West | −26.20 (−45.38 to −7.01) | −0.10 | <0.01 | |
| East | Reference | |||
| EQI of tertiary hospitals | 0.338 | |||
| Number of endoscopists | 4.91 (3.54–6.28) | 0.29 | <0.01 | |
| Annual volume of endoscopy (×103) | 2.60 (1.90–3.29) | 0.30 | <0.01 | |
| Region | ||||
| Northeast | −77.00 (−113.32 to −40.67) | −0.16 | <0.01 | |
| Central | −33.00 (−59.23 to −6.75) | −0.09 | 0.01 | |
| West | −25.12 (−51.43 to 1.20) | −0.08 | 0.06 | |
| East | Reference | |||
| Health expenditure (×109 CNY) | −0.09 (−0.34 to 0.17) | −0.02 | 0.51 | |
| GDP per capita (×103 CNY) | 0.01 (−0.37 to 0.37) | 0.001 | 0.99 |
CI: Confidence interval; CNY: Chinese Yuan; EQI: Endoscopy quality index; GDP: Gross domestic product.