Characteristics of patients with diabetes mellitus between the two groups in 2014 before PSM
| Variables | Pilot group (n=4907) | Control group (n=459 159) | P value |
| Sex, n (%) | <0.001 | ||
| Male | 2650 (54.00) | 2 32 450 (50.63) | |
| Female | 2257 (46.00) | 2 26 709 (49.37) | |
| Age (years), mean±SD | 62.44±10.69 | 60.81±10.73 | <0.001 |
| Number of comorbidities, n (%) | <0.001 | ||
| 0 | 1343 (27.37) | 179 413 (39.07) | |
| 1 | 1473 (30.02) | 135 287 (29.46) | |
| ≥2 | 2091 (42.61) | 144 459 (31.46) | |
| Number of complications, n (%) | <0.001 | ||
| 0 | 1800 (36.68) | 229 503 (49.98) | |
| 1 | 1020 (20.79) | 126 591 (27.57) | |
| ≥2 | 2087 (42.53) | 103 065 (22.45) | |
| Types of medical insurance, n (%) | <0.001 | ||
| Urban employees | 4725 (96.29) | 388 182 (84.54) | |
| Urban residents | 182 (3.71) | 70 977 (15.46) | |
| Hospital grade*, n (%) | <0.001 | ||
| Primary hospitals | 1252 (25.51) | 158 363 (34.49) | |
| Secondary hospitals | 2678 (54.58) | 133 279 (29.03) | |
| Tertiary hospitals | 977 (19.91) | 167 517 (36.48) |
↵*ST Hospital is a secondary hospital, but patients with diabetes mellitus participating in capitation also went to other grades of hospitals as appropriate.
PSM , propensity score matching.