Introduction
Methods
Data and study population
Patient subgroups by indication
Geographical assignment
Rates, standardization and assessment of variation
Empirical model
Dependent variable
Independent variables
Spatial model
Results
Study sample
Frequency, characteristics and regional CA rates
Hospital | Office-based practice | |||
---|---|---|---|---|
Inpatient hospital | Outpatient hospital | |||
Cases | n (column %) | N (row %) | ||
CA | 425,163 | 369,882 (87.00%) | 19,317 (4.54%) | 35,964 (8.46%) |
PCI* | 168,418 (39.61%) | 163,503 (97.08%) | 118 (0.07%) | 4797 (2.85%) |
CABG* | 4642 (1.09%) | 4642 (100.00%) | 0 (0.00%) | 0 (0.00%) |
Treatment diagnosis** | ||||
Cases with MI | 75,542 (17.77%) | 74,983 (99.26%) | 62 (0.08%) | 497 (0.66%) |
Cases without MI | 349,621 (82.23%) | 294,899 (84.35%) | 19,255 (5.51%) | 35,467 (10.14%) |
Cases | Cases without MI | Cases with MI | |
---|---|---|---|
Crude data | |||
Number of CAs | 425,163 | 349,621 | 75,542 |
Crude rate per 10,000 population | 101.86 | 83.76 | 18.10 |
Age-sex DSR in 401 districts per 10,000 population | |||
Median | 101.67 | 82.82 | 17.41 |
Mean (SD) | 102.69 (25.98) | 84.32 (24.18) | 17.61 (3.44) |
Min | 46.79 | 27.08 | 9.58 |
Max | 229.19 | 210.62 | 33.77 |
Measures of variation | |||
COV | 25.29 | 28.68 | 19.53 |
SCV | 6.44 | 8.26 | 3.37 |
Model results
Cases overall | Cases without MI | Cases with MI | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Model A (SARE) | Model B (SCRARE) | Model A (SARE) | Model B (SCRARE) | Model A (SARE) | Model B (SCRARE) | |||||||
Wr | We | Wr | We | Wr | We | Wr | We | Wr | We | Wr | We | |
Observations | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 |
Pseudo R-squared | 0.4186 | 0.4265 | 0.4261 | 0.4352 | 0.3813 | 0.3894 | 0.3895 | 0.3992 | 0.3986 | 0.4005 | 0.3995 | 0.4023 |
β (SE) | ||||||||||||
Estimate of CHD prevalencea | 10.01 (0.88)*** | 10.48 (1.63)*** | 9.87 (0.88)*** | 10.38 (0.88)*** | 8.99 (0.81)*** | 9.44 (0.81)*** | 8.87 (0.81)*** | 9.35 (0.81)*** | 1 (0.14)*** | 1.01 (0.14)*** | 0.99 (0.14)*** | 1 (0.14)*** |
GISD 2012 | 0.16 (0.1) | 0.1 (0.11) | 0.15 (0.1) | 0.11 (0.1) | 0.13 (0.09) | 0.07 (0.09) | 0.12 (0.09) | 0.08 (0.09) | 0.04 (0.02)** | 0.04 (0.02)** | 0.04 (0.02)** | 0.04 (0.02)*** |
Cath labsb | 40.62 (16.33)** | 45.92 (19.83)** | 53.41 (18.16)*** | 56.68 (18.32)*** | 37.64 (14.96)** | 43.36 (15.77)*** | 49.34 (16.79)*** | 53.53 (16.95)*** | 2.91 (2.87) | 2.97 (2.91) | 3.35 (2.92) | 3.49 (2.95) |
W × Cath labsb | 77.18 (47.71) | 80.41 (49.84) | 68.44 (44.18) | 74.64 (46.56) | 6.35 (7.3) | 7.59 (7.14) | ||||||
Constant | –143.81 (165.58) | –174.98 (142.44) | –167.02 (165.36) | –170.68 (173.94) | –103.5 (151.88) | –147.53 (160.93) | –123.82 (151.71) | –143.93 (160.46) | –20.05 (28.46) | –15.35 (28.81) | –21.27 (28.46) | –14.21 (28.78) |
ρ | 0.67 (0.05)*** | 0.72 (0.06)*** | 0.66 (0.05)*** | 0.71 (0.06)*** | 0.68 (0.05)*** | 0.72 (0.06)*** | 0.68 (0.05)*** | 0.72 (0.06)*** | 0.3 (0.06)*** | 0.31 (0.09)*** | 0.3 (0.06)*** | 0.31 (0.09)*** |