Table 1 Basic characteristics of patient mobility for CKD. Detailed definitions of variables were provided in Additional file 1: Table S2
All | Within-province | Cross-province | Missing† | P* | |
|---|---|---|---|---|---|
Number of city-level paths of mobility | 7441 | 1990 (26.7%) | 5451 (73.3%) | ||
Number of cross-city hospitalizations (total) | 1 332 189 | 1 027 238 (77.1%) | 304 951 (22.9%) | ||
Number of cross-city hospitalizations (median [interquartile range]) | 16.0 [9.0–44.0] | 30.0 [12.0–172.75] | 13.0 [8.0–30.0] | ||
Source city | |||||
Number of nephrologists (pmp) | 14.1 ± 16.8 | 9.4 ± 11.5 | 15.7 ± 18.1 | 686 | 0.026 |
Proportion of nephrologists per thousand physicians | 4.2 ± 2.9 | 3.4 ± 2.4 | 4.5 ± 3.0 | 686 | 0.101 |
UBMI coverage proportion (%) | 37.2 ± 51.9 | 26.9 ± 34.8 | 40.8 ± 56.1 | 686 | 0.216 |
Number of hospital beds (pmp) | 5231.5 ± 2077.5 | 4755.9 ± 1760.4 | 5396.7 ± 2152.5 | 686 | 0.005 |
Number of physicians (pmp) | 2690.0 ± 1517.9 | 2302.6 ± 1123.3 | 2824.6 ± 1611.2 | 686 | 0.007 |
Traffic eigenvector centrality | 2.1 ± 2.4 | 1.7 ± 2.1 | 2.3 ± 2.5 | 59 | 0.924 |
Average annual population (million) | 5.9 ± 4.6 | 4.9 ± 2.6 | 6.2 ± 5.1 | 686 | 0.292 |
GDP per capita (¥1000) | 61.9 ± 42.6 | 53.9 ± 36.2 | 64.7 ± 44.3 | 686 | 0.302 |
Destination city | |||||
Number of nephrologists (pmp) | 22.8 ± 19.2 | 12.4 ± 13.8 | 26.4 ± 19.5 | 307 | < 0.001 |
Proportion of nephrologists per thousand physicians | 6.0 ± 3.2 | 4.1 ± 2.5 | 6.7 ± 3.1 | 307 | < 0.001 |
Number of hospital beds (pmp) | 6220.6 ± 2190.0 | 5218.7 ± 1986.9 | 6563.7 ± 2150.8 | 307 | < 0.001 |
Number of physicians (pmp) | 3275.0 ± 1614.4 | 2561.0 ± 1333.9 | 3519.5 ± 1629.5 | 307 | < 0.001 |
Traffic eigenvector centrality | 2.9 ± 2.8 | 1.7 ± 2.2 | 3.3 ± 2.8 | 22 | < 0.001 |
Average annual population (million) | 7.3 ± 5.1 | 5.1 ± 2.6 | 8.1 ± 5.5 | 307 | < 0.001 |
GDP per capita (¥1000) | 76.6 ± 42.8 | 58.7 ± 38.1 | 82.7 ± 42.7 | 307 | < 0.001 |
Between cities | |||||
Highway distance (km) | 998.7 ± 816.9 | 315.1 ± 243.0 | 1249.5 ± 810.0 | 577 | < 0.001 |