Table 1 Basic characteristics of the patients by travel distance to hospitals, N (column %)
Characteristics | Travel distance to hospitals | ||
|---|---|---|---|
 ≤ 40 km |  > 40 km | Total | |
Gender | |||
 Female | 25,027 (53.6%) | 7725 (52.2%) | 32,752 (53.3%) |
 Male | 21,632 (46.4%) | 7066 (47.8%) | 28,698 (46.7%) |
Marriage | |||
 Not married | 8969 (19.2%) | 2479 (16.8%) | 11,448 (18.6%) |
 Married | 37,690 (80.8%) | 12,312 (83.2%) | 50,002 (81.4%) |
 Age | 66.034 (12.4) | 65.705 (11.7) | 65.955 (12.3) |
Age category | |||
  < 65 | 19,365 (41.5%) | 6052 (40.9%) | 25,417 (41.4%) |
  ≥ 65 | 27,294 (58.5%) | 8739 (59.1%) | 36,033 (58.6%) |
Ethnicity | |||
 Minority | 13,697 (29.4%) | 8225 (55.6%) | 21,922 (35.7%) |
 Han | 32,962 (70.6%) | 6566 (44.4%) | 39,528 (64.3%) |
Health insurance | |||
 UEBMI | 3008 (6.4%) | 946 (6.4%) | 3954 (6.4%) |
 URBMI/NCMS | 37,811 (81.0%) | 12,137 (82.1%) | 49,948 (81.3%) |
 Medical Assistance | 4905 (10.5%) | 1251 (8.5%) | 6156 (10.0%) |
 Other | 935 (2.0%) | 457 (3.1%) | 1392 (2.3%) |
Years of admission | |||
 2017 | 6395 (13.7%) | 2125 (14.4%) | 8520 (13.9%) |
 2018 | 8975 (19.2%) | 2849 (19.3%) | 11,824 (19.2%) |
 2019 | 10,990 (23.6%) | 3551 (24.0%) | 14,541 (23.7%) |
 2020 | 10,138 (21.7%) | 3091 (20.9%) | 13,229 (21.5%) |
 2021 | 10,161 (21.8%) | 3175 (21.5%) | 13,336 (21.7%) |
 Charlson comorbidity score | 1.390 (1.7) | 1.266 (1.6) | 1.360 (1.7) |
Charlson comorbidity score category | |||
 0 | 11,253 (24.1%) | 4285 (29.0%) | 15,538 (25.3%) |
 1 | 21,457 (46.0%) | 6522 (44.1%) | 27,979 (45.5%) |
 2 or 3 | 11,404 (24.4%) | 3293 (22.3%) | 14,697 (23.9%) |
  > 3 | 2545 (5.5%) | 691 (4.7%) | 3236 (5.3%) |
Types of chronic diseases | |||
 Hypertension | 30,793 (66.0%) | 10,742 (72.6%) | 41,535 (67.6%) |
 Diabetes | 6408 (13.7%) | 1806 (12.2%) | 8214 (13.4%) |
 Comorbid with hypertension and diabetes | 9458 (20.3%) | 2243 (15.2%) | 11,701 (19.0%) |